What is the cause of body itch

Allergic Reaction: There are many causes and the reaction can range from very mild to severe. Thinks to consider includes food you ate, exposure to certain substance, a change in soap or detergent, etc. Most of the time, treatment with an anti- histamine can resolve the itching and probably cure your symptoms. It is good idea to remember if you exposed yourself to new products, ate certain type new food. Good luck.