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
Call emergency services now if the exposed person:
Has severe trouble breathing, blue or grey lips, or chest pain
Collapses, cannot be awakened, or becomes severely confused
Has a seizure
Develops rapidly worsening weakness or loss of coordination
Has severe eye pain or sudden loss of vision
Has extensive blistering or a deep burn
And for anyone, someone who:
you believe has taken an overdose or swallowed something poisonous
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
2
Is any of this happening?
Be seen today
Contact a poison centre promptly after any swallowed wart remover, even if there are no symptoms.
Also call after an uncertain amount, a large skin exposure, eye exposure, repeated overuse, or any ringing in the ears, fast breathing, vomiting, dizziness, or confusion.
3
Does any of this apply?
Book an appointment
Seek routine medical follow-up if a treated area remains very painful, keeps spreading, develops pus, or is not healing.
Follow-up is also appropriate for continuing hearing changes, reduced urination, breathing symptoms, or vision problems after the immediate exposure has been assessed.
Every sign above is quoted from the sofidex article on Wart remover poisoning. If you are not sure, err upward — it is always reasonable to be checked.