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
These concerns require assessment but are not always emergencies.
Call emergency services if:
A seizure lasts five minutes or longer
Seizures repeat without recovery between them
Breathing is difficult or the person does not recover as expected
There is an immediate risk of serious self-harm or harm to others
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 first suspected seizure, new loss of established skills, persistent pain, a major unexplained behaviour change, or medication side effects.
3
Does any of this apply?
Book an appointment
Arrange routine medical follow-up for concerns about development, speech, learning, attention, anxiety, hearing, vision, sleep, feeding, or bowel habits.
Assessment is also appropriate if fragile X or an FMR1 premutation has been found in a biological relative.
The article also says
Follow any existing seizure or crisis plan.
Every sign above is quoted from the sofidex article on Fragile X syndrome. If you are not sure, err upward — it is always reasonable to be checked.