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
Seek emergency care if the foot becomes cold, pale, blue, or numb, or if you lose movement after an injury.
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 urgent medical assessment after an injury if you cannot bear weight, the foot looks newly deformed, or pain and swelling are severe.
A rapidly spreading red, hot swelling with fever also needs prompt medical care, particularly if you have diabetes, poor circulation, or reduced immunity.
3
Does any of this apply?
Book an appointment
Arrange a routine appointment if:
Foot or ankle pain lasts, returns, or limits normal activity
The heel position or arch is changing over time
One foot looks noticeably different from the other
The foot is stiff rather than flexible
You have inner ankle swelling or difficulty rising onto your toes
A child is limping, avoiding play, or reporting persistent pain
Shoes repeatedly cause pressure, sores, or marked uneven wear
Every sign above is quoted from the sofidex article on Valgus calcaneus. If you are not sure, err upward — it is always reasonable to be checked.