Hi, It seems that you might be having chronic fungal infection and not treated properly. Due to itching there might be having infection producing folliculitis giving trouble off an on. To cure this infection you might require one course of anti-fungal medicine like Flucanozole 150 mg once in a week for four weeks. Apply anti-fungal cream or lotion locally. Due to having this problem since long you became little psychologiclly upset giving rise all negative thoughts. This is not serious and go for treatment. you will be totally alright. Ok and take care.