Skin conditions like psoriasis,dermatitis, brachiradial neuralgia(itching
on upper torso and
arma),hives, 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.
You can apply an anti-itch cream or lotion to the affected area. Oral antihistamine, such as Benadryl can also be used.