blitzkrieg
Well-Known Member
Would this include depression due to anger directed internally?
If the anger were related to ones environment, then yes. Exogenous depression is generally thought of as arising from 'without' or externally, whilst endogenous depression is depression from within, or what might be considered organic or biological depression in today's terms.
Depression doesn't always have to be related to an external event, or be related to solely biological mechanisms, it can be a mixture of both factors or it can be related to negative thought patterns, in which case something like cognitive behavioural therapy might be of use to some people in managing their own mindset.