uk Health & medical scares

What to do if…
you have a painful erection that has lasted several hours and will not go away

Produced and maintained by PanicStation.org Published: 12 May 2026 Last reviewed: 17 July 2026 Editorial policy UK guide

Short answer

Treat this as an emergency: go to A&E now if the erection has lasted more than 3 to 4 hours, or sooner if you have sickle cell disease and a painful erection lasting more than 1 hour. Do not drive yourself; ask someone to take you or call 999 and ask for an ambulance.

Do not do these things

Do not wait it out once it has lasted several hours; delaying can increase the risk of lasting damage.
Do not drive yourself to A&E if you are in significant pain, feel faint, have taken alcohol or drugs, or would not be safe to drive.
Do not take more erectile dysfunction medicine, such as sildenafil or tadalafil, or use more injections or supplements to try to fix it.
Do not put ice packs or cold water on your penis.
Do not drink alcohol or smoke while waiting or travelling for help.
Do not use harsh home measures, forceful manipulation, or repeated attempts to make it go down.
Do not have sex or masturbate to try to make it go away.
Do not let embarrassment stop you from getting urgent help; staff treat this as a time-sensitive medical problem.

What to do now

Go to A&E now if:
- the erection has lasted more than 3 to 4 hours, or
- you have sickle cell disease and a painful erection has lasted more than 1 hour.
Ask someone to take you. If you are alone, too unwell to travel safely, or the pain is severe, call 999 and ask for an ambulance.
On the way, or while waiting, note the key details in your phone:
- when the erection started, even if approximate
- whether it is painful and how severe the pain is
- whether you have sickle cell disease or another blood condition
- any possible trigger, such as erectile dysfunction tablets, penile injection treatment, alcohol, recreational drugs, recent injury, or a new medicine
Bring what clinicians may need quickly, if it is easy to grab:
- your medicines, or photos of the boxes or blister packs
- any erectile dysfunction tablets or injection equipment you used
- allergy information
When you arrive, say plainly at reception or triage: “I have a painful erection that has lasted several hours and will not go away. It may be priapism.”
If you have sickle cell disease, say this immediately at triage.
If saying it out loud feels too difficult, show the triage desk the sentence on your phone and ask for privacy.

What can wait

You do not need to work out the cause right now.
You do not need to decide whether you will see a specialist later or change medicines.
You do not need to try more home measures once it has lasted several hours; getting to A&E or calling 999 matters more.
You do not need to explain anything perfectly. The start time, pain level, medicines, and sickle cell status are enough to begin.

Important reassurance

This is a known medical emergency that hospitals see and treat. Feeling embarrassed, panicked, or frozen is common, but you are not wasting anyone’s time. Getting help quickly is the best way to protect your health.

Scope note

These are first steps for the first hours only. After urgent assessment or treatment, later decisions about follow-up, medicines, recurrence, or specialist care may need medical help.

Important note

This is general information, not medical advice, a diagnosis, or a substitute for urgent care. If you have a painful erection lasting several hours, an erection lasting more than 3 to 4 hours, or a painful erection lasting more than 1 hour with sickle cell disease, seek emergency medical help.

Additional Resources

About this guide

This guide was produced and is maintained by PanicStation.org using its published editorial process. Official and specialist sources are checked where relevant, and AI-assisted tools may be used for drafting, organisation, and consistency checks. The site operator remains responsible for publication, revision, and removal decisions.

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