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 care for:
Chest pain, fainting, or severe shortness of breath
A very fast or seriously irregular heartbeat with weakness or dizziness
High fever with marked agitation, confusion, vomiting, or diarrhea
A seizure, collapse, or inability to wake normally
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 advice after taking more thyroid medicine than intended, even if you feel well, because effects may be delayed.
In the United States, Poison Control can be reached at 1-800-222-1222; elsewhere, use your local poison information service.
These symptoms can indicate a serious heart problem, severe thyrotoxicosis, or another urgent condition.
3
Does any of this apply?
Book an appointment
Arrange a routine medical appointment for ongoing symptoms such as an unexplained fast heartbeat, tremor, sweating, weight loss, or difficulty sleeping.
Seek medical review if you think your thyroid prescription strength is wrong or a supplement may contain thyroid hormone.
Every sign above is quoted from the sofidex article on Factitious hyperthyroidism. If you are not sure, err upward — it is always reasonable to be checked.