Folliculitis is bacterial, not from herpes. I am skeptical that the doctor was correct when he told you that your chest and neck rash was herpes. I also very much doubt that your systemic symptoms (itching, tingling all over, feeling sickly) are herpes-relates, unless you count being anxious about having herpes.
The only people who get herpes "all over" are people whose immune systems are not just "down" but really shot by medications or disease. And such people are really sick, with high fevers, etc., to the point of hospitalization.
I think the dermatologist who cultured your legs and diagnosed folliculitis sounds as though he knows what's going on. My advice is to show him or her what you have, share your concerns, and get the straight story.
Best.
Dr. Rockoff