Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Call emergency services if the person is choking, cannot breathe, turns blue or grey, becomes unresponsive, or has severe breathing difficulty.
These are emergencies regardless of the underlying condition.
Routine progression, such as slowly worsening walking or speech, should be discussed with the care team rather than managed through emergency services unless there is an immediate safety concern.
Seek prompt medical advice if there is:
Arrange a medical assessment if you or someone you care for develops gradually worsening balance, tremor, coordination problems, or speech changes.
These symptoms have many more common causes than kuru, but they still need evaluation.
The article also says
Mention any relevant family or personal connection to the affected communities in Papua New Guinea, particularly possible exposure during historical mortuary practices.
This information may guide referral to a neurological or prion specialist.
Every sign above is quoted from the sofidex article on Kuru. If you are not sure, err upward — it is always reasonable to be checked.