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
Keloids themselves are not medical emergencies.
Seek emergency care after a treatment or procedure if you develop trouble breathing, swelling of the face or throat, faintness, or bleeding that will not stop.
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
Request prompt medical assessment if the growth:
Enlarges unusually quickly
Bleeds or develops an open sore without clear injury
Changes in a way that is not typical for your other scars
Becomes increasingly hot, red, swollen, or painful
Produces pus or is accompanied by fever
These features do not necessarily mean something serious, but they may indicate infection or a different skin condition.
3
Does any of this apply?
Book an appointment
Arrange a routine appointment if a raised scar is growing, itching, painful, or affecting movement.
You can also seek advice if its appearance concerns you or if you are considering a piercing, tattoo, or operation after having previous keloids.
Every sign above is quoted from the sofidex article on Keloids. If you are not sure, err upward — it is always reasonable to be checked.