<s>[INST] Im 35 years old guy. my problem is that whenever i tried to sleep i felt something like black out or unconscious so woke up suddenly. thats why its hard to sleep and felt fear. its hard to explain. My ECG,ECO, EEG and Thyroid reports found normal. The consult doctor couldnt find the cause. so please help me out.thankswith regards,santosh [/INST] Hi Mr Santosh, Thank you for posting your query. The possibilities in your case are seizures (epilepsy) or a sleep disorder, as all your events are occurring during sleep. You would benefit from investigations such as polysomnography (sleep studies) and overnight sleep EEG. You would improve with proper treatment. I hope it helps. Please get back if you require any additional information. Best wishes, Chat Doctor. Ly/ </s>