My symptoms started to really become a constant thing at 19; and escalated into severe/debilitating at 20. As in fighting to get through the hour debilitating, left housebound unable to do anything wouldn't speak to family members etc. 21 now, still unable to study or work, but no longer in the desperate condition I was in . It's a 'just aim to get through the next 24 hours' thing now as opposed to 'omg how the fuck am I survive the next few hours' state that I was in a year ago. I think drug use exacerbated it a lot.