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 if you:
Vomit blood or material that looks like coffee grounds
Pass black, tar-like stools with weakness or light-headedness
Develop sudden or severe chest pain, especially with breathing difficulty
Cannot swallow your saliva or any fluids
Faint, become confused, or have signs of severe dehydration
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
Contact a healthcare professional promptly if you develop new painful or difficult swallowing, particularly if you have a weakened immune system.
You should also seek prompt advice for fever, repeated vomiting, reduced urination, worsening weakness, or rapid unintended weight loss.
And for anyone, someone who:
has a fever with a stiff neck, a rash that does not fade under pressure, or severe headache
has a wound that is hot, spreading red, or leaking pus
3
Does any of this apply?
Book an appointment
Routine follow-up is important if symptoms are not improving within the timeframe given by your care team, return after treatment, or continue to limit eating.
Keep scheduled blood tests if your treatment requires monitoring.
Every sign above is quoted from the sofidex article on Infectious esophagitis. If you are not sure, err upward — it is always reasonable to be checked.