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 after an injury, operation, or cast placement if there is:
Severe or rapidly increasing pain, especially pain that seems greater than expected
Marked pain when the fingers are gently moved or stretched
Increasingly tense swelling or a cast that feels much tighter
New numbness, tingling, weakness, or inability to move the fingers
A hand that becomes unusually pale, cold, or blue
These can be signs of acute compartment syndrome or a serious circulation problem.
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
Do not wait for every symptom to appear or for a pulse to disappear.
Seek prompt assessment for a new wound, spreading redness, drainage, or swelling, particularly in an area with reduced feeling.
Sudden new weakness, severe pain, or loss of circulation is not routine and needs urgent care.
3
Does any of this apply?
Book an appointment
If you already have a long-standing contracture, arrange routine medical follow-up if movement is becoming more limited, pain is increasing, a splint no longer fits, or the condition is interfering more with daily activities.
Every sign above is quoted from the sofidex article on Volkmann contracture. If you are not sure, err upward — it is always reasonable to be checked.