Manic Reaction (Mania, e.g., Kleptomania, Pyromania, Dipsomania, Nymphomania)
Hypomania (e.g., poor judgment, over spending, impulsivity, etc.)
Emotional Lability (Or Instability)
Alcohol Abuse and/or Craving
Akathisia (Severe Inner Restlessness)
Discontinuation (Withdrawal) Syndrome
The Physicians' Desk Reference lists the following adverse reactions (side effects) to antidepressants among a host of other physical and neuropsychiatric effects. None of these adverse reactions (side effects) is listed as Rare.
School Shootings and Psychiatric Drugs .
Was this guy also taking these "mental health" drugs ?