Hi, I can understand your concern for itching all over body. It is difficult to make a exact diagnosis of your condition without pictures and your status of age, sex and occupation. If I were your dermatologist then would have prescribed to take antihistamine loratadine by mouth as it non-sedating one. Hydroxyzine cause mild to moderate sedation so if you have sedation then you can ask your doctor to change it accordingly. The only precaution you must follow is not to touch, pinch pop or squeeze any of them other wise it can get infected and can cause complications. Take care.