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 for sudden one-sided weakness or numbness, facial drooping, trouble speaking, loss of consciousness, a seizure, severe breathing difficulty, or new confusion.
These symptoms need emergency assessment even if the spasm stops.
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 same-day medical care if a spasm lasts much longer than usual or comes with:
New swelling, redness, warmth, or severe pain
Persistent numbness or weakness
Repeated vomiting or diarrhea
Very little urination or signs of significant dehydration
Tingling around the mouth with sustained tightening of both hands
A recent injury that makes the hand or foot difficult to use
3
Does any of this apply?
Book an appointment
Arrange a routine appointment if spasms keep returning, are becoming more painful, wake you from sleep, or interfere with walking, writing, work, or other daily activities.
You should also book an appointment if they began after starting or changing a medicine.
Every sign above is quoted from the sofidex article on Hand or foot spasms. If you are not sure, err upward — it is always reasonable to be checked.