{"id":9868,"date":"2026-08-02T20:16:50","date_gmt":"2026-08-02T11:16:50","guid":{"rendered":"https:\/\/kojihifu.com\/english\/?p=9868"},"modified":"2026-08-02T20:16:51","modified_gmt":"2026-08-02T11:16:51","slug":"priapism-risk-ici-safety-patients","status":"publish","type":"post","link":"https:\/\/kojihifu.com\/english\/priapism-risk-ici-safety-patients\/","title":{"rendered":"Priapism Risk and ICI Safety: What Patients Should Know"},"content":{"rendered":"<p><script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How long does the supervised test dose session take at the clinic?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The session typically requires 90 minutes to two hours in total. After the injection is administered by the physician, the patient is observed in clinic for at least 60\u201390 minutes to assess the erectile response, confirm resolution, and adjust the prescribed home dose accordingly. Patients should not plan to drive themselves home on the same day.\"}}, {\"@type\": \"Question\", \"name\": \"Can I combine my ICI dose with a PDE5 inhibitor tablet on the same day?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This combination significantly amplifies the vasodilatory effect and substantially increases priapism risk. It should not be done without explicit written instruction from your physician. The two approaches are generally prescribed as alternatives rather than simultaneous treatments.\"}}, {\"@type\": \"Question\", \"name\": \"What is the reversal agent for ICI-induced priapism and is it available in Japan?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Phenylephrine, injected intracavernosally by a healthcare provider, is the standard first-line reversal agent recommended in international urology guidelines. It is available in Japanese hospital settings, though patients should arrive at an emergency department promptly rather than waiting. Adrenaline (epinephrine) is used as a substitute in some facilities. Bringing a Japanese-language clinical summary from your prescribing physician ensures the ER team understands the presentation immediately.\"}}, {\"@type\": \"Question\", \"name\": \"Does having ICI-related priapism once mean I have to stop treatment permanently?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Not necessarily, but it does require a thorough review with your physician before resuming. In many cases, dose reduction resolves the issue and safe continuation is possible. However, men with recurrent priapism events or an identified haematological predisposition may need to discontinue ICI and consider alternative treatments.\"}}, {\"@type\": \"Question\", \"name\": \"Are consultations at BIOTOPE CLINIC conducted in English?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. English-speaking doctor consultations are currently available at BIOTOPE CLINIC in Shirokanedai, conducted by Dr. Jun Karibe. The clinic's English-speaking support team also handles enquiries via LINE and WhatsApp. The group's sister clinic, Kojimachi Dermatology &amp; Plastic Surgery Clinic in Ichigaya, operates in Japanese only.\"}}]}<\/script><\/p>\n<h2>Priapism Risk and ICI Safety: What Patients Should Know Before Starting Intracavernosal Injection Therapy<\/h2>\n<figure style=\"margin: 1.5em 0;\"><img decoding=\"async\" style=\"width: 100%; max-width: 100%; height: auto; border-radius: 8px;\" title=\"Priapism risk and ICI safety: what patients should \u2014 Priapism Risk and ICI Safety: What Patients Should Know Befo\" src=\"https:\/\/kojihifu.com\/english\/wp-content\/uploads\/2026\/08\/pexels_4541337_1785511350.webp\" alt=\"Priapism risk and ICI safety: what patients should \u2014 Priapism Risk and ICI Safety: What Patients Should Know Befo\" \/><\/figure>\n<p>If your doctor has recommended intracavernosal injection<strong> (ICI) therapy<\/strong> for <strong>erectile dysfunction(ED)<\/strong>, it is natural to have questions \u2014 and perhaps some concerns \u2014 about a treatment that sounds more confronting than a simple tablet.<\/p>\n<p>Among those concerns, priapism stands out as the complication most commonly raised by patients. This article explains clearly what priapism is, how and why it can occur with <strong>ICI therapy<\/strong>, and what practical steps reduce that risk significantly so that you can make an informed decision alongside your physician.<\/p>\n<ul>\n<li>What intracavernosal injection (ICI) therapy is and how it works<\/li>\n<li>What priapism means, why it matters, and how commonly it occurs<\/li>\n<li>Which factors increase or reduce the risk<\/li>\n<li>How to respond if a prolonged erection does occur<\/li>\n<li>Who is and is not a suitable candidate for ICI therapy in Tokyo<\/li>\n<\/ul>\n<div class=\"kjmc-en-booking-inline\" style=\"background: #f7fbf7; border: 1px solid #d5e6d8; border-radius: 10px; padding: 16px 20px; margin: 26px 0; text-align: center;\">\n<p style=\"margin: 0 0 12px; color: #1a3a1f; font-size: 0.95em; line-height: 1.65;\"><strong>Have a question about this treatment?<\/strong><br \/>\nMessage us on LINE or WhatsApp \u2014 our English-speaking team usually replies the same day.<\/p>\n<p style=\"margin: 0; line-height: 1;\"><a style=\"display: inline-flex; align-items: center; gap: 8px; background: #06C755; color: #fff; padding: 10px 20px; border-radius: 8px; text-decoration: none; font-weight: bold; font-size: 0.92em; margin: 4px 6px; white-space: nowrap; vertical-align: middle;\" href=\"https:\/\/line.me\/R\/ti\/p\/@710uitns?ts=05311801&amp;oat_content=url#~\" target=\"_blank\" rel=\"noopener noreferrer\">Book via LINE<\/a><br \/>\n<a style=\"display: inline-flex; align-items: center; gap: 8px; background: #25D366; color: #fff; padding: 10px 20px; border-radius: 8px; text-decoration: none; font-weight: bold; font-size: 0.92em; margin: 4px 6px; white-space: nowrap; vertical-align: middle;\" href=\"https:\/\/whatsapp.com\/channel\/0029VbCA1v85K3zY4MLX2a1h\" target=\"_blank\" rel=\"noopener noreferrer\">Message on WhatsApp<\/a><\/p>\n<\/div>\n<h2>What Is Intracavernosal Injection (ICI) Therapy?<\/h2>\n<figure style=\"margin: 1.5em 0;\"><img decoding=\"async\" style=\"width: 100%; max-width: 100%; height: auto; border-radius: 8px;\" title=\"Priapism risk and ICI safety: what patients should \u2014 What Is Intracavernosal Injection (ICI) Therapy\" src=\"https:\/\/kojihifu.com\/english\/wp-content\/uploads\/2026\/08\/pexels_5998512_1785511350.webp\" alt=\"Priapism risk and ICI safety: what patients should \u2014 What Is Intracavernosal Injection (ICI) Therapy\" \/><\/figure>\n<p><strong>Intracavernosal injection therapy<\/strong> is a well-established second-line treatment for <strong>erectile dysfunction (ED)<\/strong> in men who do not respond adequately to, or cannot tolerate, oral PDE5 inhibitors such as sildenafil (Viagra) or tadalafil (Cialis). The term &#8220;intracavernosal&#8221; simply means &#8220;into the corpora cavernosa&#8221; \u2014 the two sponge-like columns of erectile tissue that run the length of the penis.<\/p>\n<p>A small-gauge needle is used to deliver vasoactive medication directly into this tissue, triggering smooth muscle relaxation and increased blood inflow, producing an erection that is largely independent of sexual arousal or psychological state.<\/p>\n<p>The injection is performed by the patient at home after thorough in-clinic training, using a very fine needle comparable to those used in insulin self-injection. Most men describe the discomfort as minimal once they have practised the technique.<\/p>\n<h3>What medications are used?<\/h3>\n<p>The most common formulations are <strong>Bimix<\/strong> (a combination of papaverine and phentolamine) and <strong>Trimix<\/strong> (papaverine, phentolamine, and alprostadil). Alprostadil alone (available as a branded monotherapy) is also used. Each formulation and dosage is individualised: the starting dose is always determined in a supervised clinical setting, with the patient observed before any home use is permitted.<\/p>\n<h2>Understanding Priapism: What It Is and Why It Matters<\/h2>\n<figure style=\"margin: 1.5em 0;\"><img decoding=\"async\" style=\"width: 100%; max-width: 100%; height: auto; border-radius: 8px;\" title=\"Priapism risk and ICI safety: what patients should \u2014 Understanding Priapism: What It Is and Why It Matters\" src=\"https:\/\/kojihifu.com\/english\/wp-content\/uploads\/2026\/08\/pexels_4226906_1785511351.webp\" alt=\"Priapism risk and ICI safety: what patients should \u2014 Understanding Priapism: What It Is and Why It Matters\" \/><\/figure>\n<p>Priapism is a prolonged erection that persists beyond four hours and is unrelated to sexual stimulation or desire.<\/p>\n<p>The name derives from the Greek deity Priapus. Despite sounding like a trivial side effect, priapism is a genuine medical emergency when it is of the ischaemic (low-flow) type \u2014 meaning blood is trapped in the corpora cavernosa without adequate oxygenation. Left untreated, ischaemic priapism can cause permanent cavernous fibrosis and irreversible erectile dysfunction within 24\u201348 hours of onset.<\/p>\n<p>It is important to distinguish <strong>ischaemic (veno-occlusive) priapism<\/strong> from non-ischaemic (high-flow, arterial) priapism. ICI-related priapism is almost always the ischaemic type. The affected tissue becomes increasingly hypoxic, acidotic, and eventually fibrotic if the erection is not resolved promptly. This is why patients are explicitly counselled on the four-hour rule before commencing home ICI therapy.<\/p>\n<h3>How common is ICI-related priapism?<\/h3>\n<p>Clinical reports indicate that the incidence of prolonged erection requiring medical intervention ranges from approximately 1% to 5% across published ICI series, with the wide variation reflecting differences in formulation, starting dose, and patient selection.<\/p>\n<p>Studies suggest that Trimix, when properly dose-titrated in a clinical setting, carries a lower per-injection priapism rate than historical monotherapy alprostadil data, because the phentolamine and papaverine components allow lower individual doses of each agent.<\/p>\n<p>A review published in the <em>Journal of Sexual Medicine<\/em> noted a clinically significant priapism rate of approximately 1\u20132% with supervised Trimix protocols, compared with rates closer to 3\u20135% in early unmonitored alprostadil programmes.<\/p>\n<blockquote style=\"border-left: 4px solid #5a8a5a; padding: .75em 1.1em; margin: 1.8em 0; background: #f7fbf7; border-radius: 0 6px 6px 0; font-size: .93em;\">\n<p style=\"margin: 0 0 .45em; font-weight: bold; color: #3a6e3a;\">Dr. Karibe&#8217;s Note<\/p>\n<p style=\"margin: 0; color: #333; line-height: 1.7;\">A common question I receive at<strong> BIOTOPE CLINIC<\/strong> is whether priapism is inevitable with self-injection therapy.<\/p>\n<p style=\"margin: 0; color: #333; line-height: 1.7;\">The honest answer is that it is a real but manageable risk \u2014 one that disciplined dose titration and clear patient education reduce substantially. Many of our international patients are surprised to find that the initial supervised test dose session, where we observe the erectile response in clinic before allowing home use, is the single most important safety step. Skipping this step \u2014 whether by obtaining medication informally or adjusting doses without guidance \u2014 accounts for the majority of preventable cases I have seen.<\/p>\n<\/blockquote>\n<h2>Risk Factors and How to Reduce Them<\/h2>\n<figure style=\"margin: 1.5em 0;\"><img decoding=\"async\" style=\"width: 100%; max-width: 100%; height: auto; border-radius: 8px;\" title=\"Priapism risk and ICI safety: what patients should \u2014 Risk Factors and How to Reduce Them\" src=\"https:\/\/kojihifu.com\/english\/wp-content\/uploads\/2026\/08\/pexels_11816070_1785511352.webp\" alt=\"Priapism risk and ICI safety: what patients should \u2014 Risk Factors and How to Reduce Them\" \/><\/figure>\n<p>Not every ICI patient carries the same level of priapism risk. Certain clinical and behavioural factors are consistently associated with higher incidence.<\/p>\n<h3>Factors that increase risk<\/h3>\n<ul>\n<li><strong>Sickle cell trait or disease<\/strong> \u2014 red blood cells sickle more readily in a low-oxygen, low-pH environment, exactly the conditions that develop in a sustained ischaemic erection.<\/li>\n<li><strong>Haematological disorders<\/strong> \u2014 leukaemia, polycythaemia vera, and other conditions altering blood viscosity or coagulation.<\/li>\n<li><strong>Concurrent use of anticoagulants or certain antidepressants<\/strong> \u2014 particularly trazodone, which has independent priapism associations.<\/li>\n<li><strong>Dose escalation without physician oversight<\/strong> \u2014 self-adjusting the dose upward because previous doses &#8220;didn&#8217;t work well enough&#8221; is the most common behavioural trigger.<\/li>\n<li><strong>Psychogenic ED patients<\/strong> \u2014 paradoxically, men with predominantly psychological rather than vascular ED may have exaggerated responses to even low ICI doses.<\/li>\n<li><strong>Injection frequency<\/strong> \u2014 exceeding the recommended maximum of one injection per 24 hours and three per week is a well-documented risk multiplier.<\/li>\n<\/ul>\n<h3>Protective measures<\/h3>\n<ul>\n<li>Always begin with a supervised in-clinic test dose session with observation for at least 60\u201390 minutes.<\/li>\n<li>Keep a reversal agent (phenylephrine for clinic use; see below) immediately accessible and understand the escalation pathway.<\/li>\n<li>Adhere strictly to prescribed dose and frequency limits.<\/li>\n<li>Report any erection lasting more than two hours to your treating physician \u2014 the four-hour threshold is the emergency trigger, but earlier contact is always better.<\/li>\n<li>Avoid combining ICI with PDE5 inhibitors on the same day unless explicitly directed by your physician.<\/li>\n<\/ul>\n<h2>What to Do If Priapism Occurs: A Clear Action Plan<\/h2>\n<figure style=\"margin: 1.5em 0;\"><img decoding=\"async\" style=\"width: 100%; max-width: 100%; height: auto; border-radius: 8px;\" title=\"Priapism risk and ICI safety: what patients should \u2014 What to Do If Priapism Occurs: A Clear Action Plan\" src=\"https:\/\/kojihifu.com\/english\/wp-content\/uploads\/2026\/08\/pexels_4541398_1785511353.webp\" alt=\"Priapism risk and ICI safety: what patients should \u2014 What to Do If Priapism Occurs: A Clear Action Plan\" \/><\/figure>\n<p>Every patient starting ICI therapy should have a written action plan before performing the first home injection. The following framework is consistent with published urology guidelines.<\/p>\n<table style=\"border-collapse: collapse; width: 100%; margin: 20px 0; font-size: 0.95em; border: 1px solid #ccc;\">\n<thead>\n<tr>\n<th style=\"border: 1px solid #ccc; padding: 10px 12px; background: #f1faf3; text-align: left; font-weight: bold;\">Time Since Erection Onset<\/th>\n<th style=\"border: 1px solid #ccc; padding: 10px 12px; background: #f1faf3; text-align: left; font-weight: bold;\">Recommended Action<\/th>\n<th style=\"border: 1px solid #ccc; padding: 10px 12px; background: #f1faf3; text-align: left; font-weight: bold;\">Setting<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ccc; padding: 10px 12px; vertical-align: top;\">Under 2 hours<\/td>\n<td style=\"border: 1px solid #ccc; padding: 10px 12px; vertical-align: top;\">Vigorous physical exercise (climbing stairs, squats), application of ice pack to perineum \u2014 may resolve a mildly prolonged response<\/td>\n<td style=\"border: 1px solid #ccc; padding: 10px 12px; vertical-align: top;\">Home<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ccc; padding: 10px 12px; vertical-align: top;\">2\u20134 hours<\/td>\n<td style=\"border: 1px solid #ccc; padding: 10px 12px; vertical-align: top;\">Contact treating physician immediately; prepare to travel to emergency facility<\/td>\n<td style=\"border: 1px solid #ccc; padding: 10px 12px; vertical-align: top;\">Home \/ en route<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ccc; padding: 10px 12px; vertical-align: top;\">Over 4 hours<\/td>\n<td style=\"border: 1px solid #ccc; padding: 10px 12px; vertical-align: top;\">Attend emergency department urgently \u2014 aspiration and\/or intracavernosal phenylephrine injection required<\/td>\n<td style=\"border: 1px solid #ccc; padding: 10px 12px; vertical-align: top;\">Hospital emergency<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ccc; padding: 10px 12px; vertical-align: top;\">Over 6 hours<\/td>\n<td style=\"border: 1px solid #ccc; padding: 10px 12px; vertical-align: top;\">Surgical shunting may be required; risk of permanent fibrosis increases substantially with each additional hour<\/td>\n<td style=\"border: 1px solid #ccc; padding: 10px 12px; vertical-align: top;\">Hospital (urology on call)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>In Japan, patients should be aware that not every emergency department physician will have immediate familiarity with priapism management. Bringing a short written clinical summary in Japanese \u2014 which your prescribing physician can provide \u2014 significantly accelerates appropriate care.<\/p>\n<h2>Who Is a Good Candidate for ICI Therapy \u2014 and Who Should Avoid It<\/h2>\n<figure style=\"margin: 1.5em 0;\"><img decoding=\"async\" style=\"width: 100%; max-width: 100%; height: auto; border-radius: 8px;\" title=\"Priapism risk and ICI safety: what patients should \u2014 Who Is a Good Candidate for ICI Therapy \u2014 and Who Should Avo\" src=\"https:\/\/kojihifu.com\/english\/wp-content\/uploads\/2026\/08\/pexels_5994630_1785511353.webp\" alt=\"Priapism risk and ICI safety: what patients should \u2014 Who Is a Good Candidate for ICI Therapy \u2014 and Who Should Avo\" \/><\/figure>\n<h3>Suitable candidates<\/h3>\n<ul>\n<li>Men with confirmed organic ED (vascular, neurogenic, or post-surgical) who have trialled oral PDE5 inhibitors at therapeutic doses without adequate response<\/li>\n<li>Men for whom PDE5 inhibitors are contraindicated (e.g. nitrate medication users, certain cardiac conditions)<\/li>\n<li>Men who prefer a reliable, on-demand response not dependent on oral absorption timing<\/li>\n<li>Post-prostatectomy patients \u2014 ICI often remains effective when other options fail due to cavernous nerve disruption<\/li>\n<\/ul>\n<h3>Patients for whom ICI is generally not recommended<\/h3>\n<ul>\n<li>Men with sickle cell disease or other priapism-predisposing haematological conditions<\/li>\n<li>Patients with severe coagulation disorders or on therapeutic anticoagulation<\/li>\n<li>Men with a history of prior priapism<\/li>\n<li>Patients with anatomical penile abnormalities (e.g. severe Peyronie&#8217;s disease with acute plaque) unless cleared by a urologist<\/li>\n<li>Patients lacking the manual dexterity or visual acuity to perform self-injection safely<\/li>\n<\/ul>\n<p>In Dr. Karibe&#8217;s clinical experience at BIOTOPE CLINIC, a careful medical history review during the initial consultation identifies the large majority of higher-risk patients before any prescription is issued. Men&#8217;s health consultations at BIOTOPE include a thorough cardiovascular and pharmacological review to ensure ICI is contextually appropriate.<\/p>\n<h2>Common Misconceptions About ICI Therapy and Priapism<\/h2>\n<p><strong>Misconception 1: &#8220;Priapism only affects younger men with a very strong response.&#8221;<\/strong><br \/>\nIn fact, priapism risk from ICI is dose-dependent and independent of age. Older men with vascular disease may have paradoxically high responses if their smooth muscle is highly sensitive to the vasodilatory agents used. The supervised dose-finding session is equally important for all age groups.<\/p>\n<p><strong>Misconception 2: &#8220;If I had no problem the first few times, I can adjust the dose myself.&#8221;<\/strong><br \/>\nDose tolerance with ICI is not linear. Therapeutic window, injection site variability, and concurrent lifestyle factors (alcohol, fatigue, medications) can all alter the erectile response to the same nominal dose. Dose adjustments must always be made with physician input \u2014 this is one of the most preventable causes of ICI-related priapism encountered in clinical practice.<\/p>\n<h2>ICI Therapy in Tokyo: Consultation and What to Expect<\/h2>\n<p>At <strong>BIOTOPE CLINIC<\/strong> in Shirokanedai, the men&#8217;s health service \u2014 offered exclusively at the BIOTOPE CLINIC location \u2014 provides English-speaking consultations for<strong> ED evaluation and ICI therapy<\/strong> under Dr. Karibe&#8217;s supervision.<\/p>\n<p>The process begins with an initial consultation (\u00a53,300) and, if ICI therapy is considered, a dedicated surgical\/specialist consultation with Dr. Karibe (\u00a52,200). Pre-treatment blood work (\u00a511,000) is standard to screen for contraindications. The supervised in-clinic test dose session, dose titration, and patient education are conducted before any home prescription is issued.<\/p>\n<p>For patients who do not yet require injection therapy, <strong>BIOTOPE CLINIC<\/strong> also offers oral PDE5 inhibitor prescriptions (sildenafil, tadalafil) as a first-line approach. ICI therapy with Trimix or Bimix is available for those who progress to second-line treatment. For an accurate quote tailored to your specific situation, a consultation is recommended.<\/p>\n<div class=\"kjmc-en-booking-inline\" style=\"background: #f7fbf7; border: 1px solid #d5e6d8; border-radius: 10px; padding: 16px 20px; margin: 26px 0; text-align: center;\">\n<p style=\"margin: 0 0 12px; color: #1a3a1f; font-size: 0.95em; line-height: 1.65;\"><strong>Have a question about this treatment?<\/strong><br \/>\nMessage us on LINE or WhatsApp \u2014 our English-speaking team usually replies the same day.<\/p>\n<p style=\"margin: 0; line-height: 1;\"><a style=\"display: inline-flex; align-items: center; gap: 8px; background: #06C755; color: #fff; padding: 10px 20px; border-radius: 8px; text-decoration: none; font-weight: bold; font-size: 0.92em; margin: 4px 6px; white-space: nowrap; vertical-align: middle;\" href=\"https:\/\/line.me\/R\/ti\/p\/@710uitns?ts=05311801&amp;oat_content=url#~\" target=\"_blank\" rel=\"noopener noreferrer\">Book via LINE<\/a><br \/>\n<a style=\"display: inline-flex; align-items: center; gap: 8px; background: #25D366; color: #fff; padding: 10px 20px; border-radius: 8px; text-decoration: none; font-weight: bold; font-size: 0.92em; margin: 4px 6px; white-space: nowrap; vertical-align: middle;\" href=\"https:\/\/whatsapp.com\/channel\/0029VbCA1v85K3zY4MLX2a1h\" target=\"_blank\" rel=\"noopener noreferrer\">Message on WhatsApp<\/a><\/p>\n<\/div>\n<h2>Where to Receive ICI Therapy in Tokyo<\/h2>\n<p>Within our clinic group, English-speaking consultations are handled at <strong>BIOTOPE CLINIC in Shirokanedai (Minato-ku, Tokyo)<\/strong> by Dr. Jun Karibe. Our sister clinic, <strong>Kojimachi Dermatology &amp; Plastic Surgery Clinic<\/strong> in Ichigaya (Chiyoda-ku), is the group&#8217;s main office and handles Japanese-language insurance-covered dermatology \u2014 it is not currently set up for English-language consultations. All English enquiries \u2014 including men&#8217;s health, ICI therapy, and ED consultations \u2014 should be directed to BIOTOPE CLINIC via LINE or WhatsApp.<\/p>\n<h2>Frequently Asked Questions<\/h2>\n<dl class=\"kj-faq\">\n<dt>Q. How long does the supervised test dose session take at the clinic?<\/dt>\n<dd>The session typically requires 90 minutes to two hours in total. After the injection is administered by the physician, the patient is observed in clinic for at least 60\u201390 minutes to assess the erectile response, confirm resolution, and adjust the prescribed home dose accordingly. Patients should not plan to drive themselves home on the same day.<\/dd>\n<dd><\/dd>\n<dt>Q. Can I combine my ICI dose with a PDE5 inhibitor tablet on the same day?<\/dt>\n<dd>This combination significantly amplifies the vasodilatory effect and substantially increases priapism risk. It should not be done without explicit written instruction from your physician. The two approaches are generally prescribed as alternatives rather than simultaneous treatments.<\/dd>\n<dd><\/dd>\n<dt>Q. What is the reversal agent for ICI-induced priapism and is it available in Japan?<\/dt>\n<dd>Phenylephrine, injected intracavernosally by a healthcare provider, is the standard first-line reversal agent recommended in international urology guidelines. It is available in Japanese hospital settings, though patients should arrive at an emergency department promptly rather than waiting. Adrenaline (epinephrine) is used as a substitute in some facilities. Bringing a Japanese-language clinical summary from your prescribing physician ensures the ER team understands the presentation immediately.<\/dd>\n<dd><\/dd>\n<dt>Q. Does having ICI-related priapism once mean I have to stop treatment permanently?<\/dt>\n<dd>Not necessarily, but it does require a thorough review with your physician before resuming. In many cases, dose reduction resolves the issue and safe continuation is possible. However, men with recurrent priapism events or an identified haematological predisposition may need to discontinue ICI and consider alternative treatments.<\/dd>\n<dd><\/dd>\n<dt>Q. Are consultations at <strong>BIOTOPE CLINIC<\/strong> conducted in English?<\/dt>\n<dd>Yes. English-speaking doctor consultations are currently available at BIOTOPE CLINIC in Shirokanedai, conducted by Dr. Jun Karibe. The clinic&#8217;s English-speaking support team also handles enquiries via LINE and WhatsApp. The group&#8217;s sister clinic, Kojimachi Dermatology &amp; Plastic Surgery Clinic in Ichigaya, operates in Japanese only.<\/dd>\n<\/dl>\n<div class=\"kjmc-en-booking-inline\" style=\"background: #f7fbf7; border: 1px solid #d5e6d8; border-radius: 10px; padding: 16px 20px; margin: 26px 0; text-align: center;\">\n<p style=\"margin: 0 0 12px; color: #1a3a1f; font-size: 0.95em; line-height: 1.65;\"><strong>Have a question about this treatment?<\/strong><br \/>\nMessage us on LINE or WhatsApp \u2014 our English-speaking team usually replies the same day.<\/p>\n<p style=\"margin: 0; line-height: 1;\"><a style=\"display: inline-flex; align-items: center; gap: 8px; background: #06C755; color: #fff; padding: 10px 20px; border-radius: 8px; text-decoration: none; font-weight: bold; font-size: 0.92em; margin: 4px 6px; white-space: nowrap; vertical-align: middle;\" href=\"https:\/\/line.me\/R\/ti\/p\/@710uitns?ts=05311801&amp;oat_content=url#~\" target=\"_blank\" rel=\"noopener noreferrer\">Book via LINE<\/a><br \/>\n<a style=\"display: inline-flex; align-items: center; gap: 8px; background: #25D366; color: #fff; padding: 10px 20px; border-radius: 8px; text-decoration: none; font-weight: bold; font-size: 0.92em; margin: 4px 6px; white-space: nowrap; vertical-align: middle;\" href=\"https:\/\/whatsapp.com\/channel\/0029VbCA1v85K3zY4MLX2a1h\" target=\"_blank\" rel=\"noopener noreferrer\">Message on WhatsApp<\/a><\/p>\n<\/div>\n<h2>Summary<\/h2>\n<p><strong>ICI therapy<\/strong> with Trimix or Bimix is a reliable, evidence-supported treatment for men whose erectile dysfunction has not responded adequately to oral medication.<\/p>\n<p>Priapism is its most significant safety concern \u2014 a genuine medical emergency if it exceeds four hours \u2014 but clinical reports indicate that with proper dose titration, supervised initiation, and clear patient education, the risk can be reduced to the 1\u20132% range in well-managed programmes.<\/p>\n<p>The essential safeguards are straightforward: begin with a supervised in-clinic test dose, never self-adjust the prescribed dose, respect frequency limits, and know precisely what to do if an erection lasts longer than two hours.<\/p>\n<p>Men with sickle cell disease, significant haematological disorders, or a prior history of priapism require particularly careful evaluation before <strong>ICI therapy<\/strong> is considered.<\/p>\n<p>If you have questions about priapism risk, ICI therapy, or ED treatment in general, English-speaking consultations are handled at <strong>BIOTOPE CLINIC in Shirokanedai (Minato-ku, Tokyo)<\/strong> by Dr. Karibe. Our sister clinic <strong>Kojimachi Dermatology &amp; Plastic Surgery Clinic<\/strong> in Ichigaya (Chiyoda-ku) handles Japanese-language insurance dermatology. English enquiries: LINE or WhatsApp.<\/p>\n<div class=\"kjmc-en-booking-box\" style=\"background: linear-gradient(135deg,#f1faf3 0%,#e6f3ea 100%); border-radius: 14px; padding: 32px 24px; margin: 36px 0 24px; border: 1px solid #c5dccd; text-align: center;\">\n<h3 style=\"margin: 0 0 8px; color: #3a6e3a; border: none; padding: 0; font-size: 1.3em;\">24\/7 Consultation &amp; Booking<\/h3>\n<div style=\"width: 48px; height: 2px; background: #3a6e3a; margin: 0 auto 22px;\"><\/div>\n<p style=\"margin: 0 0 12px; color: #1a3a1f; font-size: 1.1em; font-weight: bold;\">Book a Consultation or Treatment<\/p>\n<p style=\"margin: 0 0 24px; color: #2c4a35; line-height: 1.75;\">Our English-speaking team responds via LINE or WhatsApp \u2014 usually the same day.<\/p>\n<p style=\"margin: 0 0 10px; line-height: 1;\"><a style=\"display: inline-flex; align-items: center; justify-content: center; gap: 10px; background: #06C755; color: #fff; padding: 14px 32px; border-radius: 10px; text-decoration: none; font-weight: bold; font-size: 1.02em; box-shadow: 0 2px 8px rgba(6,199,85,0.25); min-width: 240px; white-space: nowrap;\" href=\"https:\/\/line.me\/R\/ti\/p\/@710uitns?ts=05311801&amp;oat_content=url#~\" target=\"_blank\" rel=\"noopener noreferrer\">Book via LINE<\/a><\/p>\n<p style=\"margin: 0; line-height: 1;\"><a style=\"display: inline-flex; align-items: center; justify-content: center; gap: 10px; background: #25D366; color: #fff; padding: 14px 32px; border-radius: 10px; text-decoration: none; font-weight: bold; font-size: 1.02em; box-shadow: 0 2px 8px rgba(37,211,102,0.25); min-width: 240px; white-space: nowrap;\" href=\"https:\/\/whatsapp.com\/channel\/0029VbCA1v85K3zY4MLX2a1h\" target=\"_blank\" rel=\"noopener noreferrer\">Message on WhatsApp<\/a><\/p>\n<\/div>\n<h2>References<\/h2>\n<ol>\n<li>Burnett AL, Sharlip ID. Standard operating procedures for priapism. Journal of Sexual Medicine. 2013.<\/li>\n<li>Montague DK, Jarow J, Broderick GA, et al. American Urological Association guideline on the management of priapism. Journal of Urology. 2003.<\/li>\n<li>Porst H, Buvat J, eds. Standard Practice in Sexual Medicine. Blackwell Publishing. 2006.<\/li>\n<li>Levine LA, Dimitriou RJ. Vacuum constriction and external erection devices in erectile dysfunction. Urologic Clinics of North America. 2001.<\/li>\n<li>Gross MS, Broghammer JA, Kaufman MR, et al. Intracavernosal injection therapy: a review of efficacy and adverse events in the era of pharmacological erectogenic agents. Sexual Medicine Reviews. 2019.<\/li>\n<\/ol>\n<div style=\"margin: 2.5em 0 1em; padding: 1.5em; border: 1px solid #d5d5d5; border-radius: 10px; background: #fafafa; font-size: .9em;\">\n<p style=\"font-size: .72em; font-weight: bold; color: #888; margin: 0 0 1.2em; letter-spacing: .08em;\">SUPERVISED BY<\/p>\n<div style=\"display: flex; align-items: flex-start; gap: 1.2em; flex-wrap: wrap;\">\n<div style=\"flex-shrink: 0; text-align: center; min-width: 110px;\"><img decoding=\"async\" style=\"width: 100px; height: 100px; border-radius: 50%; object-fit: cover; object-position: top center; display: block; margin: 0 auto; border: 3px solid #e0e0e0;\" src=\"https:\/\/kojihifu.com\/hon\/wp-content\/uploads\/2022\/01\/photo-karibejun-400-3_re-300x300.jpg\" alt=\"Dr. Jun Karibe MD \u2014 Board-certified Plastic Surgeon, Director of Kojimachi Dermatology &amp; Plastic Surgery Clinic\" \/><\/p>\n<p style=\"margin: .6em 0 .1em; font-weight: bold; font-size: .95em; color: #222;\">Dr. Jun Karibe<\/p>\n<p style=\"margin: 0 0 .1em; font-size: .75em; color: #999;\">MD<\/p>\n<p style=\"margin: 0; font-size: .75em; color: #555; font-weight: bold;\">Director<\/p>\n<\/div>\n<div style=\"flex: 1; min-width: 200px;\">\n<div style=\"margin-bottom: .75em; background: #fff; border: 1px solid #ebebeb; border-radius: 6px; padding: .7em 1em;\">\n<p style=\"margin: 0 0 .35em; font-size: .78em; font-weight: bold; color: #666; border-bottom: 1px solid #f2f2f2; padding-bottom: .3em;\">Education &amp; Career<\/p>\n<div style=\"font-size: .82em; color: #444; line-height: 1.75;\">\n<div>Juntendo University School of Medicine<\/div>\n<div>Department of Plastic Surgery, University of Tokyo Hospital<\/div>\n<div>Assistant Professor, Plastic &amp; Cosmetic Surgery, Saitama Medical University<\/div>\n<div>Assistant Professor &amp; Chief Resident, Yamanashi University Hospital<\/div>\n<div>2019: Founded Kojimachi Dermatology &amp; Plastic Surgery Clinic (Ichigaya, Tokyo)<\/div>\n<div>2021: Founded BIOTOPE CLINIC Shirokanedai (Minato-ku, Tokyo)<\/div>\n<\/div>\n<\/div>\n<div style=\"margin-bottom: .75em; background: #fff; border: 1px solid #ebebeb; border-radius: 6px; padding: .7em 1em;\">\n<p style=\"margin: 0 0 .35em; font-size: .78em; font-weight: bold; color: #666; border-bottom: 1px solid #f2f2f2; padding-bottom: .3em;\">Certifications<\/p>\n<div style=\"font-size: .82em; color: #444; line-height: 1.75;\">\n<div>Board-certified Plastic Surgeon \u2014 Japan Society of Plastic and Reconstructive Surgery<\/div>\n<div>Specialist \u2014 Japan Society of Anti-Aging Medicine<\/div>\n<div>Certified Industrial Physician \u2014 Japan Medical Association<\/div>\n<div>Allergan VST-certified Injector (Botox &amp; Hyaluronic Acid)<\/div>\n<\/div>\n<\/div>\n<div style=\"background: #fff; border: 1px solid #ebebeb; border-radius: 6px; padding: .7em 1em;\">\n<p style=\"margin: 0 0 .35em; font-size: .78em; font-weight: bold; color: #666; border-bottom: 1px solid #f2f2f2; padding-bottom: .3em;\">Awards<\/p>\n<div style=\"font-size: .82em; color: #444; line-height: 1.75;\">\n<div>Best Presentation Award \u2014 Dept. of Plastic Surgery, University of Tokyo (2016)<\/div>\n<div>Excellence Award \u2014 Japan Society of Plastic and Reconstructive Surgery (2018)<\/div>\n<div>Featured Presentation \u2014 ASPS Annual Scientific Meeting, USA (2018)<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div style=\"margin-top: 1em; padding-top: .75em; border-top: 1px solid #e8e8e8; display: flex; flex-wrap: wrap; align-items: center; gap: .5em;\"><a style=\"display: inline-block; background: #e1306c; color: #fff; padding: .4em .9em; border-radius: 4px; text-decoration: none; font-size: .8em; font-weight: bold;\" href=\"https:\/\/www.instagram.com\/dr.jun_\/\" target=\"_blank\" rel=\"noopener noreferrer\">Instagram<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"Learn about priapism risk with intracavernosal injection therapy for ED. Understand safety, prevention strategies, and when ICI is right for you.","protected":false},"author":4,"featured_media":9867,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21],"tags":[605,606,579,595,580,584,296],"class_list":["post-9868","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-skin-dermatology","tag-priapism","tag-sexual-health","tag-erectile-dysfunction","tag-intracavernosal-injection","tag-ed-treatment","tag-ici-therapy","tag-treatment-safety"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/kojihifu.com\/english\/wp-json\/wp\/v2\/posts\/9868","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kojihifu.com\/english\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kojihifu.com\/english\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kojihifu.com\/english\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/kojihifu.com\/english\/wp-json\/wp\/v2\/comments?post=9868"}],"version-history":[{"count":1,"href":"https:\/\/kojihifu.com\/english\/wp-json\/wp\/v2\/posts\/9868\/revisions"}],"predecessor-version":[{"id":9926,"href":"https:\/\/kojihifu.com\/english\/wp-json\/wp\/v2\/posts\/9868\/revisions\/9926"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kojihifu.com\/english\/wp-json\/wp\/v2\/media\/9867"}],"wp:attachment":[{"href":"https:\/\/kojihifu.com\/english\/wp-json\/wp\/v2\/media?parent=9868"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kojihifu.com\/english\/wp-json\/wp\/v2\/categories?post=9868"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kojihifu.com\/english\/wp-json\/wp\/v2\/tags?post=9868"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}