Pruritus is defined as any itching or tingling sensation on the skin that provokes the desire to scratch or rub. It may appear either all over the body (generalized) or may be limited to specific areas of the body (localized).

In many cases, the cause of an itch is complicated and difficult to diagnose. It may result from an associated skin disease, such as chicken pox, hives or eczema, or a skin rash. In other cases, an internal disease such as parasite infestation or kidney or liver failure may cause pruritus.

Most cases of pruritus can be treated at home and do not require professional treatment. However, pruritus that is severe, prolonged or cannot be explained requires a visit to a physician. In most patients, pruritus responds well to treatment.