Hi,
Thank you for posting your query.
As your brother has had a neurological problem (
hydrocephalus) in the past, and has a shunt inserted for that, it would be better to see a
neurologist first.
If the shunt is working fine, then, we need to look at alternative causes such as
electrolyte imbalance (low sodium, etc), deranged liver function tests, high
creatinine, etc. These can be checked with blood tests.
If these are normal, he may be shown to a
psychiatrist.
I hope my answer helps. Please get back if you have any follow up queries or if you require any additional information.
Wishing you good health,
Dr Sudhir Kumar MD (Internal Medicine), DM (Neurology)
Senior Consultant Neurologist
Apollo Hospitals, Hyderabad, India
Click on this link to ask me a DIRECT QUERY: http://bit.ly/Dr-Sudhir-kumar
My BLOG: http://bestneurodoctor.blogspot.in