Actually, looking at your meds, I wonder it they are responsible for part or all of your symptoms. How long have you been on them? Lithium commonly causes acne, Seroquel commonly causes "impaired temperature regulation", which I suppose could cause hot flashes and Abilify can either increase or decrease your appetite. Lithium also commonly causes some other hormonal imbalances, primarily hypothyroidism and hypoparathyroidism. I know you said your thyroid was fine, but hypoparathyroidism can causes anxiety, which could causes hot flashes as well as numbness and tingling in your extremities, among other things. That's probably a stretch, but if nothing else checks out, maybe something to look into.