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:
Severe difficulty breathing or blue, grey, or unusually pale lips
A seizure, fainting, or difficulty waking
New weakness, loss of movement, or severe confusion
Sudden severe headache with neurological changes
Signs of severe dehydration, such as collapse or very little urine
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
If you have diagnosed histiocytosis, contact your care team promptly about new or worsening symptoms.
Same-day advice may be appropriate for jaundice, rapidly increasing swelling, severe bone pain, inability to bear weight, dehydration, or fever while taking treatment that weakens the immune system.
These signs do not always come from histiocytosis, but they require urgent assessment.
3
Does any of this apply?
Book an appointment
Arrange a routine medical appointment if you have a persistent unexplained rash, lump, bone pain, cough, swollen lymph node, or marked increase in thirst and urination.
These symptoms are not specific to histiocytosis, but they deserve assessment if they continue.
Every sign above is quoted from the sofidex article on Histiocytosis. If you are not sure, err upward — it is always reasonable to be checked.