Hello and welcome to Healthcare Magic. Thanks for your query.
This kind of abnormal behaviour could be indicative of a psychotic disorder
. However, your friend needs a detailed psychiatric assessment to make a correct diagnosis. Please take him to a psychiatrist
for further evaluation and treatment. The earlier psychiatric disorders are detected and treated, the better is the prognosis. If he is refusing treatment and if you feel that his abnormal behaviour may be dangerous - putting himself or others at risk, then you need to inform his family and appropriate authorities about this.
Wish you all the best.
- Dr. Jonas Sundarakumar