Melancholy is a persistent state of sadness which is the result of interaction among one particular's interior biological and psychological state and gets induced of with environmental stressors. Reactive melancholy is in response into a situation like loss, sickness, trauma etc. Endogenous despair takes place with no visible environmental stressors. https://eduardodyjon.wikijournalist.com/5645501/how_much_you_need_to_expect_you_ll_pay_for_a_good_attentin