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
Emergency care is rarely needed.
Get immediate help if bleeding is heavy or does not stop after firm, continuous pressure, particularly if you take medicine that affects blood clotting.
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 a prompt appointment for a lesion that:
Grows or changes noticeably over weeks or months
Has several colors or an irregular border
Bleeds without being scratched or injured
Does not heal after crusting or bleeding
Becomes persistently painful
Looks clearly different from your other growths
Appears as part of a sudden widespread outbreak
These features do not prove that a growth is cancerous.
They mean that looking at it more closely is important.
Seek urgent care after removal if there is spreading redness with fever, worsening pain with pus, or other signs of a significant infection.
3
Does any of this apply?
Book an appointment
Arrange a routine appointment if you have a growth that may be a seborrheic keratosis but has not been identified before.
Assessment is also reasonable if it repeatedly catches, itches, or affects how you feel about your appearance.
The article also says
Seborrheic keratosis itself is not an emergency.
Every sign above is quoted from the sofidex article on Seborrheic keratosis. If you are not sure, err upward — it is always reasonable to be checked.