Conversation: The conversation between human and AI assistant.
[|Human|] For last day i have occasionally felt sharp twinges at back of head on left side. Only lasts for few seconds then passes. I also fainted last night for no reason, I was with friends in a comfortable situation and had not been drinking alcohol. Advise please
[|AI|]  Hello! Thank you for asking on Chat Doctor! Your symptoms could be related to occipital neuralgia. For this reason, I would recommend consulting with a neurologist for a careful physical exam and some tests:- a cervical spine X-Ray study- a brain CT scan-complete blood count, PCR, ESR for inflammation. If the problem persists, you may need to start an antiepileptic Chat Doctor.  In the meantime, I would recommend trying indomethacine twice daily for the pain (if there are no contraindications). Hope you will find this answer helpful! Best wishes,