Realistically, it looks likely to be another case of SSRI side effects. The UK Daily Mail reports he was taking "a variety" of psch drugs.
As were Robin Williams, James Holmes, Adam Lanza, Ivan Lopez, Aaron Alexis, and Eric Harris. Ask your doctor if Irritability, Homicidal Ideation and Thoughts of Suicide are right for you. If your depression worsens, see your doctor right away - or crash a plane full of passengers.
"Hard data that SSRIs cause mania & manic episodes are frequently accompanied by violence:" Dr. Richard Kapit, a retired FDA scientist who reviewed Prozac, Paxil and Zoloft in the late 1980s before the antidepressants were approved to treat depression in adults, said that he suspected the drugs could cause people to become suicidal or homicidal from the beginning.
"I had always thought the drugs had the potential to cause manic episodes, and manic episodes are frequently accompanied by violence," said Kapit, "Now we have hard data to back up what everyone sort of believed, that these drugs are capable of causing manic states."
The thinking was, if only one in a hundred who took them went batsheeyit crazy and killed themselves or someone else, that was an acceptable loss. What they didn't count on, was that doctors would start handing them out like candy and prescribing them to people under 25, whose brains are not fully developed and shouldn't be taking them at all. When you've got literally millions of people popping these potential neurotoxins, that one percent becomes a sizable portion of the population and people start losing their minds right and left.
ssristories.org lists over 5000 cases in which SSRI meds have been directly linked to violent episodes.
Mixing and matching SSRIs, or switching scrips without a suitable detox period seems to cause a lot of problems:
>>Psyche Meds Drove My Son Crazy<<
Ironically, the Mainstream "News" Media will not report on this connection, because they make billions per year running advertising for these medications.
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"I don't mean to sound bitter, cynical or cruel - but I am, so that's how it comes out." - Bill Hicks