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
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 prompt medical advice if the area develops increasing redness, warmth, swelling, pus, or worsening pain.
Fever or feeling unwell with these symptoms can suggest a spreading infection.
Seek urgent care for bleeding that does not stop after steady pressure, rapidly spreading redness with severe pain, or signs of serious illness.
3
Does any of this apply?
Book an appointment
Arrange a routine appointment with a healthcare professional if:
You are unsure whether the growth is a wart
It is painful, spreading, or interfering with walking or daily activities
It is on your face, genitals, or around a nail
It keeps returning or has not improved with correctly used treatment
It changes shape or colour, grows quickly, bleeds repeatedly, or develops an open sore
You have many warts or a weakened immune system
You have diabetes, poor circulation, or reduced feeling in your feet
The article also says
Warts are not usually an emergency.
Every sign above is quoted from the sofidex article on Warts and plantar warts. If you are not sure, err upward — it is always reasonable to be checked.