Waist a circle itch may be related to dry skin, urticaria, neurodermatitis and other reasons. 1. Dry skin: if the bath is too frequent, often with hot water and scrub hard and other inappropriate way, destroy the skin’s stratum corneum, thus the waist skin dry, can lead to itching symptoms. 2. Urticaria: If you suffer from urticaria, when scratching the waist, not only will there be a circle of itching in the waist, there will also be wind, often recurring episodes. 3. Neurodermatitis: when it first started in the waist, the waist can appear paroxysmal itching, especially at night, scratching the skin gradually appeared corn grain to mung bean size flat papules. Waist a circle itch there are other reasons (such as infection and other factors), if there is intense itching or other uncomfortable symptoms, it is recommended to seek medical attention to identify the cause, and under the guidance of the doctor for treatment.