Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
1
Is any of this happening now?
Call 911
Heavy bleeding that does not stop with gentle pressure, or an inability to pass urine, requires emergency care.
Other emergency signs, for anyone
Someone who is struggling to breathe, gasping, choking, or cannot get words out
Someone who has chest pain, tightness or pressure lasting more than a few minutes
Someone who has sudden weakness or drooping on one side of the face or body, slurred speech, or sudden confusion
Someone who is unconscious, or cannot be woken
Someone who is bleeding heavily and it will not stop with firm pressure
Someone who has had a seizure that will not stop, or does not wake up afterwards
Someone who has lips or skin that look pale, blue, grey or blotchy
Someone who you believe has taken an overdose or swallowed something poisonous
2
Is any of this happening?
Be seen today
Seek urgent medical care if you develop:
Rapidly worsening swelling with fever or severe pain
Pus, spreading redness or other signs of a significant infection
A foreskin trapped behind the glans and unable to move forward
Increasing difficulty passing urine
3
Does any of this apply?
Book an appointment
Arrange a prompt, non-emergency appointment if you notice a red, raw or scaly penile patch that persists, keeps returning or does not improve as expected.
You should also seek assessment for unexplained bleeding, a sore that does not heal, thickening, a new lump, or difficulty pulling back the foreskin.
If you have already been treated, contact your care team before the next routine visit if the patch returns or a new abnormal area appears.
Keep planned follow-up appointments even when the skin looks normal.
Every sign above is quoted from the sofidex article on Erythroplasia of queyrat. If you are not sure, err upward — it is always reasonable to be checked.