Also, the drowsy, dragged down feeling, after having been very high.
See Chronic Bronchitis.
"I'm startin' to come down. If I dont smoke some more my Chronic Fatigue will set in."
There is no diagnostic test for chronic fatigue syndrome and is really is a disease of exclusion.
In many cases patients are diagnosed with chronic fatigue syndrome but turn out to have serious immune system problems, cancer, dysautonomia and other.