A 23 years married male, not working for last 6 months, since he used cannabis for two days. H/o aggressive behaviour towards parents, wife, children, self smiling, self muttering, gesturing. Took charas for 1 year , 2-3 cigarettes a week, Last Dose 4 years ago. Past and Family history of psychiatric illness - NAD.

Premorbid - NAD. Urine for THC - Negative. What could be the most probable diagnosis?