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 there is immediate danger, severe confusion, a seizure, collapse, chest pain, breathing difficulty, suspected overdose, or thoughts or actions involving self-harm or harm to someone else.
Stay with the person if it is safe 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
Arrange prompt, same-day medical advice if the behavior changes suddenly or follows:
Starting or increasing a medicine
Possible use of recreational drugs or an unknown substance
Several nights with almost no sleep and unusually high energy
Rapidly worsening agitation or risky behavior
3
Does any of this apply?
Book an appointment
Book a routine appointment if hyperactivity has lasted for months and regularly affects learning, work, relationships, sleep, or safety.
Assessment is also reasonable if teachers, family members, or coworkers notice the same pattern in different settings.
The article also says
Hyperactivity without these warning signs is not usually an emergency.
Every sign above is quoted from the sofidex article on ADHD hyperactivity. If you are not sure, err upward — it is always reasonable to be checked.