what medical conditions cause the skin to itch?
Skin Conditions. Several skin conditions can cause the skin to itch. They include dermatitis, psoriasis, chickenpox, scabies, hives and lice. Itching may be accompanied by redness, bumps or scales, which can aid doctors in determining a definitive diagnosis.
Itchy skin is an uncomfortable, irritating sensation that makes you want to scratch. Also known as pruritus (proo-RIE-tus), itchy skin is usually caused by dry skin. It's common in older adults, as skin tends to become drier with age. Depending on the cause of your itchy skin, it may appear normal. Or it may be red or rough or have bumps or blisters.