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:
Chest pressure or pain with breathlessness, sweating, nausea, or arm or jaw pain
Sudden facial drooping, speech difficulty, confusion, or one-sided weakness
Sudden loss of bladder or bowel control with groin numbness
Severe breathing difficulty, fainting, or rapidly worsening weakness
These are not typical signs of MPS.
They may indicate another condition that needs immediate care.
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 care for severe pain after a significant injury, especially if you cannot use the affected limb or it looks deformed.
A hot, red, swollen area with fever also needs prompt assessment.
3
Does any of this apply?
Book an appointment
Arrange a routine medical appointment if muscle pain lasts more than a few weeks, repeatedly returns, or is becoming harder to manage.
You should also seek assessment if you have a new lump, persistent swelling, unexplained weight loss, night sweats, fever, numbness, or worsening weakness.
Every sign above is quoted from the sofidex article on MPS. If you are not sure, err upward — it is always reasonable to be checked.