A patient is brought with 6 months history of odd behavior. There is history of a family member having disappeared some years back. He seems to be talking to himself and sometimes laughing loudly. The likely diagnosis is:-
There is history of -Disorganized behavior -Hallucinations (talking to self and laughing loudly is most likely a result of patient hearing some voices and communicating with the voices) -The history of disappeared family member is again suggesting that some family member may have had a mental illness because of which either he got lost or committed suicide.All factors combined, the likely diagnosis is schizophrenia.
Schizophrenia
Conversion disorder
Major depression
Delusional disorder
Schizophrenia Spectrum and Other Psychotic Disorders