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 if sudden stiffness or weakness occurs with signs of stroke, such as facial drooping, trouble speaking, loss of balance, vision changes, or a severe new headache.
Emergency care is also needed for:
Rapidly worsening spasms with fever, confusion, seizures, or severe illness
A suspected interruption of an intrathecal baclofen pump, particularly with itching, fever, marked stiffness, or confusion
A pounding headache, sweating or flushing, and sudden worsening spasms after a high spinal cord injury, which may indicate autonomic dysreflexia
Do not stop baclofen suddenly unless an emergency clinician specifically directs you to do so.
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 for a sudden unexplained increase in spasms.
Infection, constipation, bladder retention, a skin injury, a fracture, or another painful problem may be responsible, especially if you have reduced sensation.
3
Does any of this apply?
Book an appointment
Arrange a routine review if spasticity is increasingly painful, interrupts sleep, limits daily activities, or makes washing, dressing, walking, transfers, or positioning harder.
New skin redness, equipment problems, or gradually reduced joint movement also deserve assessment.
Every sign above is quoted from the sofidex article on Spasticity. If you are not sure, err upward — it is always reasonable to be checked.