Marcel is affected by serious, persistent problems that involve relationships, aggression, fear, and depression. he is suffering from

He is suffering from "emotional and behavioral disorders".

An emotional and behavioral disorder is an enthusiastic handicap described by the accompanying a powerlessness to construct or keep up relational associations with peers or educators. Predictable or endless wrong kind of conduct or sentiments under typical conditions and an inclination to create physical side effects, torments or preposterous feelings of trepidation related with individual or school issues.

answer; genetics;

answer; chemical substances that affect our psychological state;