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 unusual behaviour
Vomiting blood or passing black, tar-like bowel movements
Fainting, severe weakness, or difficulty staying awake
Rapidly increasing abdominal swelling or breathing difficulty
Severe jaundice with repeated vomiting or confusion
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 jaundice, dark urine, persistent vomiting, or worsening upper abdominal pain.
These signs can indicate major liver dysfunction or internal bleeding and should not wait for a routine appointment.
3
Does any of this apply?
Book an appointment
Arrange routine medical care if you think you may have been exposed, were born in a region where hepatitis B is common, have a household or sexual contact with HBV, or have never had recommended screening.
Testing is worthwhile even when you feel well.
You should also arrange review if known hepatitis B is accompanied by new swelling, easy bruising, unexplained weight loss, or increasing tiredness.
Every sign above is quoted from the sofidex article on Hepatitis B. If you are not sure, err upward — it is always reasonable to be checked.