Itchy leg curvature that is, itchy skin at the popliteal fossa, may be the manifestation of intertrigo or eczema, which needs to be specifically analyzed. 1. Intertrigo: If the itchy symptoms appear for a relatively short period of time, it may be due to the popliteal fossa skin moisture, sweaty, usually do not pay attention to skin hygiene, breeding fungi and bacteria, and erythema itchy symptoms, and in severe cases there may be vesiculobullous. 2. Eczema: if the popliteal fossa skin itching symptoms maintained for a long time and recurrent, then consider the manifestation of eczema. This disease is associated with a special constitution and abnormal local skin dysfunction. If the symptoms of itchy skin in the popliteal fossa appear, it is recommended to go to the hospital in time, and do regular treatment under the guidance of the doctor as soon as possible.