If the itch on the body is associated with red rashes, then it can be due to fungal infections but if there is no visible rash then it can be due to dry skin
or xerosis. Other conditions cause itchy skin
as well. Skin
conditions like psoriasis or dermatitis , internal diseases like liver and kidney disorders, diabetes, iron deficiency anemia, irritation and allergic reactions to chemicals, wool, soaps, cosmetics and certain foods can cause itchy skin.