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 for sudden severe confusion, collapse, a seizure, inability to stand or walk, one-sided weakness, difficulty speaking, or reduced consciousness.
These symptoms may have causes other than Hartnup disorder and need immediate assessment.
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 urgent medical advice for a rapidly worsening rash, blistered or infected skin, repeated vomiting or diarrhoea that prevents normal eating, or a clear increase in unsteadiness or confusion.
3
Does any of this apply?
Book an appointment
Arrange a routine medical appointment if you or your child has:
Repeated sun-sensitive rashes
Ongoing concerns about nutrition, appetite, or growth
Mild recurring tremor or balance problems
Questions about family testing or genetic counselling
Side effects or concerns related to vitamin supplements
Every sign above is quoted from the sofidex article on Hartnup disorder. If you are not sure, err upward — it is always reasonable to be checked.