my dad is 81 yo ,He is awake all over night and semiconciuos during day ... he refuses to lie on bed ... saliva is drippling from his mouth all the time... he refuses to use his hands even to eat .. or his legs except to go to the bathroom .... he is severly depressed .. recieving an antidepressant tablet .. with no effect ... i am deep;y depressed feel as if i am severly sqeezed from inside me .. i do not know what i can do for him ???