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 help if you:
Cannot breathe or are choking and cannot clear the blockage
Cannot swallow saliva or develop severe, sudden swallowing difficulty
Develop fever, severe muscle stiffness, confusion, and reduced alertness while taking an antipsychotic
Fever with severe stiffness and confusion may indicate neuroleptic malignant syndrome, a rare emergency that is different from tardive dyskinesia.
And for anyone, someone who:
has lips or skin that look pale, blue, grey or blotchy
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 you believe has taken an overdose or swallowed something poisonous
2
Is any of this happening?
Be seen today
Contact your care team promptly if you have repeated choking, increasing difficulty swallowing, frequent falls, or treatment side effects such as marked sleepiness, stiffness, or slowed movement.
And for anyone, someone who:
has a wound that is hot, spreading red, or leaking pus
3
Does any of this apply?
Book an appointment
Arrange a routine appointment if you notice new repeated movements after taking an antipsychotic, metoclopramide, or another dopamine-blocking medicine.
This is also appropriate if known movements are becoming more frequent or affecting eating, speech, work, walking, or social activities.
And for anyone, someone who:
has noticed a lump, a mole that has changed, or unexplained weight loss
Every sign above is quoted from the sofidex article on Tardive dyskinesia. If you are not sure, err upward — it is always reasonable to be checked.