Prolonged Penile Engorgement Following PDE5 Inhibitor Overdose
Your presentation is most consistent with a prolonged non-ischemic priapism or post-priapism penile injury rather than acute ischemic priapism, and the key management now is conservative observation with close urologic follow-up, avoidance of all erectogenic medications, and consideration for penile rehabilitation strategies if erectile function does not improve over the next 2-3 months.
Why This Is Likely NOT Acute Ischemic Priapism
Your urologists are correct in their assessment. Several features argue strongly against acute ischemic priapism 1:
- Lack of severe pain: Acute ischemic priapism is characterized by severe, progressive pain due to tissue hypoxia. You report no pain at any point
- Partial tumescence with positional changes: By 48 hours, your penis would flop down when lying, indicating some venous drainage—ischemic priapism presents with rigid, non-positional erection
- Ability to achieve erections: The fact that you can still get erections at all strongly suggests preserved corporal tissue viability. Untreated ischemic priapism leads to complete erectile dysfunction within days to weeks 1
- Timeline: True ischemic priapism becomes a surgical emergency within 4-24 hours. You're now 28 days out with preserved erectile capacity
What Likely Happened: Drug-Induced Vascular Injury
You took a dangerous combination and excessive dose of PDE5 inhibitors 2, 3, 4:
- 10mg tadalafil (on top of 14 days of daily 5mg = steady-state levels)
- 60mg total sildenafil in one night
- Tadalafil has a half-life of 17.5 hours and remains active for >2 days 5
This created a synergistic overdose causing:
- Prolonged vasodilation and venous congestion
- Possible endothelial injury from sustained engorgement
- Corporal smooth muscle dysfunction
- Potential venous thrombosis or arteriovenous fistula formation
The literature documents priapism from even single therapeutic doses of tadalafil 6, 7, and your combination far exceeded safe dosing.
Your Current Symptoms Explained
The Persistent Firmness
This represents chronic venous congestion or corporal fibrosis beginning to develop. The shaft remaining firm even when "soft" suggests:
- Impaired venous drainage
- Early smooth muscle fibrosis
- Possible low-grade arteriovenous shunting (non-ischemic priapism pattern)
The Abnormal Erections
- Thick with soft tip: Suggests corporal body engorgement with inadequate glans filling—classic for venous drainage problems
- Half-size but very firm: Indicates smooth muscle dysfunction and possible early fibrosis
- Prominent veins: Compensatory venous dilation trying to drain the corpora
- Purple coloration and heat: Venous congestion and inflammation
The Discoloration and Numbness
- Darker tip and sub-coronal area: Hemosiderin deposition from prolonged congestion or microhemorrhage
- Increased numbness: Possible nerve compression from chronic edema or direct nerve injury from the prolonged event
The Urinary and Bowel Issues
These are concerning and may indicate:
- Pelvic floor dysfunction from the prolonged priapism event
- Autonomic nervous system involvement
- Pudendal nerve irritation
The fact that straining causes semi-erection and urination causes temporary size increase confirms ongoing vascular dysregulation.
What You Need Now: Structured Management Plan
Immediate Actions (Next 2-4 Weeks)
Complete abstinence from all erectogenic medications 5
- No PDE5 inhibitors for at least 3-6 months
- Avoid any vasoactive substances
Avoid sexual stimulation and masturbation for 2-4 weeks
- Allow corporal tissue to recover
- Prevent further vascular injury
- Your current attempts are likely perpetuating the injury
Address the urinary/bowel symptoms urgently
- See a urologist specifically about these symptoms
- May need urodynamic studies
- Consider pelvic floor physical therapy evaluation
- Rule out cauda equina syndrome if symptoms worsen (this would be an emergency)
Diagnostic Workup You Should Request
Your urologists should consider 1:
Penile duplex Doppler ultrasound
- Assess arterial inflow and venous outflow
- Identify any arteriovenous fistula
- Evaluate for corporal fibrosis
MRI of penis (if available)
- Best imaging for assessing corporal smooth muscle integrity
- Can identify early fibrosis
- Evaluate for structural damage 8
Neurologic evaluation given your urinary/bowel symptoms
- EMG/nerve conduction studies if symptoms persist
- Consider MRI of lumbar spine if any concern for nerve compression
Medium-Term Management (2-6 Months)
If erectile function remains impaired after the acute phase resolves:
Penile rehabilitation program
- Low-dose daily PDE5 inhibitor (only after 3-6 month washout and with urologist supervision)
- Vacuum erection device therapy
- Intracavernosal injection therapy (if oral agents fail)
Monitor for Peyronie's disease development
- The trauma and inflammation can trigger fibrotic plaque formation
- Early intervention with pentoxifylline or collagenase may be beneficial if plaques develop
Critical Red Flags Requiring Immediate ER Visit
Return to emergency department if you develop 1:
- Sudden onset of severe penile pain (suggests acute ischemic conversion)
- Complete inability to urinate (urinary retention)
- Loss of bowel control or saddle anesthesia (cauda equina syndrome)
- Fever with penile symptoms (infection/abscess)
- Rigid erection lasting >4 hours (true acute ischemic priapism requiring emergency aspiration and phenylephrine injection)
Prognosis and Expectations
Realistic timeline for recovery:
- Weeks 4-8: Gradual improvement in firmness and vascular symptoms expected
- Months 2-3: Erectile function should begin normalizing if no permanent damage occurred
- Months 3-6: Full assessment of residual erectile dysfunction possible
Potential long-term complications:
- Erectile dysfunction (30-50% risk after prolonged priapism events, though your non-ischemic pattern is more favorable)
- Peyronie's disease (10-20% risk)
- Persistent penile numbness (usually improves but may be permanent)
- Chronic pelvic pain
Common Pitfalls to Avoid
Do not resume PDE5 inhibitors prematurely—this is the most common mistake and can cause recurrence 2, 3
Do not ignore the urinary/bowel symptoms—these suggest more extensive pelvic involvement and need separate evaluation
Do not continue frequent masturbation "to test function"—you're preventing healing
Do not accept "just wait and see" without objective testing—request the Doppler ultrasound at minimum
Why Your Doctors May Be Missing Something
Your concern about missed diagnosis is valid regarding the urinary and bowel symptoms—these are not typical of isolated penile injury and warrant dedicated neurologic/urologic evaluation. However, regarding the penile symptoms themselves, your urologists' assessment appears appropriate. The key issue is that you need:
- Objective vascular imaging (Doppler ultrasound) to document the current state
- Formal evaluation of the urinary/bowel dysfunction (separate from penile assessment)
- Clear timeline and benchmarks for expected recovery
Request a penile duplex Doppler ultrasound at your next urology visit—this is the single most important test to guide further management and provide objective data about your vascular status 1, 8.
The combination of tadalafil and sildenafil you took created a perfect storm for vascular injury 2, 3, 4. Recovery will take months, not weeks, but your ability to still achieve erections is genuinely encouraging for long-term prognosis.