<s>[INST] helloo Doctor, my brother has a problem on backside of the neck; he feels that blood flow is getting stopped in some nerve and he feels giddiness and falls all of a sudden.. and he visited few specialists in bangalore and hyderabad in india, they could not diagnose the problem and said everything is fine as per the scan also.. could you please advice. thanks Regards, Saikumar Patthi email- YYYY@YYYY [/INST] Hello, As you have already done the scan we need to assess your brother in person on a clinical basis. As MRI is performed we may not need to do it again. We need more details about the prescription from previous physicians and MRI reports. Now dizziness and fainting can be a correlation with multiple things but need to figure out what it could be. Is your brother having postural hypotension or hypertension? Any signs of diabetes? How about his work profile? Working on a computer? How is his vision? Any signs of neck pain? Now there are a Hun Chat Doctor.  If you can provide more details than we can assess better and post questions answered we can come to a treatment part.  Most of the cases I have seen in my practice of 12 years have been diagnosed with multiangular approach and treatment was accordingly implemented based on the diagnosis. Please take a wise decision step by step and rule out the possible causes which may be causing this. I think it is a good approach is made then possibly we can help your brother. Hope I have answered your query. Let me know if I can assist you further. Jay In </s>