Generalise itching all over the body ?

Many possible cause: You need to ask your physician: It can be allergy, a skin probem, a tumor or a liver problem to name a few. You will need to be evaluated to help answer your question. We call this pruritis.

Multiple causes: Generalized itching all over body may be due to multiple causes- liver or gallbladder disease, a medication side effect, an allergy, or a bug/ mite infestation just to name a few. Try an oral antihistamine to relieve itch but see a doctor for evaluation