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 fainting, severe breathing difficulty, confusion, chest pain, or extreme weakness.
These can be signs of severe anemia or another serious problem.
Severe pain in the upper left abdomen after an injury, especially with left shoulder pain, dizziness, or fainting, may indicate bleeding from the spleen and requires emergency care.
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
Get prompt medical help for:
A sudden increase in paleness, weakness, or breathlessness
New dark urine or rapidly worsening jaundice
Persistent pain under the left ribs or in the upper right abdomen
Fever with abdominal pain, vomiting, or jaundice
Symptoms of anemia during an infection
3
Does any of this apply?
Book an appointment
Arrange a routine appointment if you develop increasing tiredness, more frequent jaundice, abdominal fullness, or reduced exercise tolerance.
Also seek advice before pregnancy or if you are unsure whether your diagnosis is HbCC, hemoglobin C trait, or hemoglobin SC disease.
Every sign above is quoted from the sofidex article on Hemoglobin C disease. If you are not sure, err upward — it is always reasonable to be checked.