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 or rapidly worsening abdominal pain, a swollen abdomen with vomiting, heavy or continuous rectal bleeding, fainting, confusion, or difficulty staying awake.
These symptoms may indicate a blockage, serious bleeding, a perforation or a severe infection.
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 the same day for:
Increasing abdominal pain, fever or repeated vomiting
Frequent bloody diarrhea or signs of dehydration
A new painful swelling, redness or drainage near the anus
Symptoms of a flare while taking immune-suppressing treatment
3
Does any of this apply?
Book an appointment
Arrange routine follow-up if symptoms are gradually becoming more frequent, you are losing weight, fatigue is persistent, or your treatment seems less effective.
Also report possible medicine side effects or difficulty taking treatment as planned.
Every sign above is quoted from the sofidex article on Crohn disease. If you are not sure, err upward — it is always reasonable to be checked.