Unexplicable sadness...

Sadness engulfs me, permeates through my soul and hurts...It has appeared inexplicably, without reason or connection to my life. Why it has absorbed into my, where it has come from, I do not know and that makes it impossible to fight it, to escape its suffocating embrace...Warm, sunny bright spring elates the life around me to happy, exuberant level. And yet, I am in deep state of sadness that I cannot seem to extinguish. I need it to go away!