After taking tadalafil (5 mg daily for two weeks, then 10 mg) and a 60 mg sildenafil chew in one night, I now have a persistent partially rigid erection, firm penile shaft, red and numb tip, discoloration with gray foreskin, prominent veins, dull ache, and difficulty achieving full erections. What is the likely diagnosis and what immediate and short‑term management should I pursue?

Likely Diagnosis and Management

You most likely experienced a prolonged ischemic priapism event that has now progressed to corporal smooth muscle damage with resultant erectile dysfunction and possible corporal fibrosis. The combination of tadalafil and sildenafil created a dangerous synergistic effect leading to prolonged ischemia, and the one-month delay means you are now dealing with the sequelae rather than acute priapism 1.

Understanding What Happened

The critical window for intervention was within the first 4-36 hours. Smooth muscle edema and atrophy begin as early as 6 hours after ischemic priapism onset, and events lasting >36 hours result in permanent erectile dysfunction with essentially no recovery of erectile function 1. Your symptoms—persistent firmness ("hard flaccid"), difficulty achieving erections, prominent veins, discoloration, numbness, and color fluctuations—are consistent with corporal smooth muscle damage and fibrosis that occurs after untreated or inadequately treated ischemic priapism.

The drug interaction you created was particularly dangerous. Combining PDE5 inhibitors (tadalafil 10mg + sildenafil 60mg) creates synergistic vasodilatory effects that can precipitate refractory priapism 2. Even single doses of tadalafil 5mg have caused priapism requiring surgical intervention 3, and your combined dosing was substantially higher. The tadalafil label explicitly warns about prolonged erections and priapism, noting that "priapism, if not treated promptly, can result in irreversible damage to the erectile tissue" 4.

Current Clinical Picture

Your symptoms one month later suggest:

• Corporal fibrosis and smooth muscle loss: The persistent firmness, difficulty achieving full erections, and "hard flaccid" state indicate structural damage to the erectile tissue
• Vascular dysfunction: Prominent veins, darker/purple discoloration, and color fluctuations suggest altered blood flow patterns and possible venous leak
• Neurological changes: Tip numbness and altered sensation indicate possible nerve damage from prolonged ischemia
• Tissue discoloration: Gray foreskin and tip discoloration reflect chronic ischemic changes

The semi-erections when lying down that don't resolve are concerning for ongoing vascular dysregulation, though these are not true priapism episodes since they resolve with position changes.

Immediate Management Steps

You need urgent urology follow-up with a specialist experienced in sexual medicine or reconstructive urology, not just general urology reassurance that "this will take time to heal." Based on the guidelines and your timeline, spontaneous full recovery is unlikely 1.

Diagnostic Workup Needed:

• Penile duplex Doppler ultrasound: To assess arterial inflow, venous outflow, and identify any arteriovenous fistulas or venous leak
• MRI of the penis: Emerging imaging that can evaluate extent of corporal fibrosis and smooth muscle loss 5
• Formal erectile function assessment: IIEF-5 questionnaire and trial of PDE5 inhibitors under supervision (though these may be less effective now)
• Corporal blood gas analysis (if any acute episodes recur): To differentiate ischemic from non-ischemic priapism

Treatment Options at This Stage:

Since you're one month out, acute interventions (aspiration, phenylephrine injection, shunting) are no longer applicable 1. Your management now focuses on:

1. Penile rehabilitation trial: Daily low-dose PDE5 inhibitor (tadalafil 5mg daily or sildenafil 25-50mg daily) to promote oxygenation and potentially limit further fibrosis—though you must never combine these medications again 4

2. Intracavernosal injection therapy: If oral medications fail, carefully titrated ICI with alprostadil (NOT papaverine/phentolamine combinations which increase priapism risk) 6

3. Vacuum erection device: To promote blood flow and stretch fibrotic tissue

4. Penile prosthesis: If erectile function does not recover after 6-12 months of conservative management, this becomes the definitive treatment. Early prosthesis implantation (within 6-12 months) is preferable to waiting years, as progressive fibrosis makes surgery more difficult 1, 2

Critical Warnings Going Forward

• Never combine PDE5 inhibitors again: The synergistic effect nearly caused permanent damage and did cause significant dysfunction 2
• Never exceed recommended dosing: Sildenafil 60mg exceeds typical dosing, and combining with tadalafil was extremely dangerous
• Avoid any alpha-blockers or antihypertensives without discussing with your urologist, as these can interact with PDE5 inhibitors 4
• If you develop a fully rigid erection lasting >4 hours in the future, this is a medical emergency requiring immediate ED presentation for aspiration and phenylephrine injection 1, 6

Prognosis

The likelihood of full spontaneous recovery of erectile function after a >36-hour ischemic priapism event is extremely low 1. Your symptoms at one month—persistent firmness, difficulty with erections, discoloration, and numbness—suggest significant corporal damage has occurred. However, with aggressive penile rehabilitation and potentially prosthetic surgery, satisfactory sexual function can be restored. The dull ache should gradually improve as inflammation resolves, but the structural changes may be permanent without intervention.

Your urologist's statement that "this would take time to heal" is partially correct but incomplete—spontaneous healing to baseline function is unlikely given the duration of your initial event and current symptoms. You need active intervention, not just observation 1.