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
Get urgent or emergency help for:
Sudden numbness or weakness after a major ankle or leg injury
A severely swollen, tense, or rapidly worsening painful foot or ankle
A foot that becomes cold, unusually pale, blue, or difficult to move
Foot symptoms accompanied by new loss of bladder or bowel control
These signs may point to a serious injury, reduced blood flow, severe pressure within the leg, or a spinal nerve emergency rather than routine tarsal tunnel syndrome.
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 numbness is spreading, foot muscles seem weaker, or you are starting to trip or lose balance.
People with diabetes or reduced foot sensation should also have sores, blisters, or broken skin assessed promptly.
3
Does any of this apply?
Book an appointment
Arrange a routine appointment if burning, tingling, or numbness in your foot keeps returning, lasts more than a short period, or interferes with walking or sleep.
Assessment is also appropriate if symptoms started after an ankle injury or you notice a lump near the inner ankle.
Every sign above is quoted from the sofidex article on Tarsal tunnel syndrome. If you are not sure, err upward — it is always reasonable to be checked.