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
Get emergency help for:
New confusion, extreme drowsiness, or difficulty waking
Vomiting blood or passing black, tar-like stools
Fainting, severe weakness, or trouble breathing
Rapidly worsening jaundice with repeated vomiting
Severe abdominal pain with a swollen or rigid abdomen
These symptoms can signal serious liver complications or internal bleeding.
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 prompt medical advice if you develop new jaundice, persistent vomiting, increasing abdominal swelling, worsening leg swelling, or unusual bruising or bleeding.
They need urgent assessment rather than waiting for a routine follow-up visit.
3
Does any of this apply?
Book an appointment
Arrange a routine appointment if you have hepatitis B but have never been tested for hepatitis D, especially if you may have had a blood or sexual exposure.
Testing is also appropriate after a known exposure or if liver tests worsen without a clear explanation.
Every sign above is quoted from the sofidex article on Delta agent. If you are not sure, err upward — it is always reasonable to be checked.