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 severe trouble breathing, fainting, confusion, chest pain, collapse, or sudden intense flushing with a racing heartbeat.
Severe abdominal pain with repeated vomiting or inability to pass stool or gas may indicate bowel blockage and also requires emergency 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
Arrange prompt medical advice for new or worsening diarrhea, flushing, wheezing, weight loss, abdominal pain, ankle swelling, or breathlessness.
If you already have the condition, report a clear change from your usual pattern.
Seek urgent medical care for:
Diarrhea with very little urine, marked dizziness, or other signs of dehydration
New breathlessness, leg swelling, or rapid loss of exercise tolerance
Persistent vomiting or worsening abdominal swelling
Severe or increasing abdominal pain
If sudden symptoms occur during or soon after a procedure, immediately tell the treating team about the functioning carcinoid because carcinoid crisis may require rapid treatment.
Every sign above is quoted from the sofidex article on Functioning carcinoid. If you are not sure, err upward — it is always reasonable to be checked.