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 medical help for:
New confusion or unusual behaviour
Difficulty waking or loss of consciousness
A seizure, especially a first seizure or one that does not stop
Sudden weakness, paralysis, or difficulty speaking
Severe headache with fever, neck stiffness, or repeated vomiting
Breathing difficulty or blue or grey lips
Tell the emergency team about recent travel, including countries visited, rural stays, mosquito exposure, and travel dates.
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
Do not wait for a routine appointment when signs of encephalitis are present.
Arrange prompt medical assessment for a fever or worsening headache during or after travel in a region where Japanese encephalitis occurs.
These symptoms are more often caused by something else, but other travel-related infections may also need testing.
New neurological symptoms during recovery should be assessed promptly rather than left until the next planned visit.
3
Does any of this apply?
Book an appointment
Routine follow-up is appropriate after hospital discharge to review recovery, medicines, seizures, swallowing, mood, memory, movement, and support needs.
Every sign above is quoted from the sofidex article on Japanese B encephalitis. If you are not sure, err upward — it is always reasonable to be checked.