What are the causes of severe itching all over body?
 Wool, chemicals, soaps and other substances can irritate the skin. Poison ivy, cosmetics and food allergies, Antibiotics, antifungal drugs or narcotic pain medications, scalp include psoriasis, head lice, seborrheic dermatitis (dandruff) and contact dermatitis, infections, bites and stings, infestations, chronic diseases, allergic reactions, sun exposure, and dry skin. 