Itchy leg sockets behind the knee may be caused by eczema, contact dermatitis, popliteal cysts and so on.
1. Eczema: Eczema is a chronic itchy skin disease, allergies and abnormalities in the immune function can trigger eczema. Eczema has an acute onset, with intense localized itching, erythema, papules, and even ulceration.
2. Contact dermatitis: contact dermatitis refers to localized inflammatory reactions after the skin comes into contact with certain external substances. Localized erythema, mild edema and accompanied by itching, burning sensation. Contact dermatitis can occur if the leg sockets come into contact with an object that causes inflammation, which can lead to this symptom.
3. Popliteal cysts: Popliteal cysts are cystic soft tissue masses that can be moved behind the knee joint and are caused by abnormally high pressure in the joint cavity and outflow of joint fluid. It can be felt as an itchy, swollen sensation behind the knee. In patients with severe popliteal cysts, edema of the distal part of the limb may occur.
In addition to the above causes, psoriasis may also trigger itchy leg sockets behind the knee, therefore, it is recommended to go to the hospital for timely examination of itchy leg sockets and choose the appropriate treatment according to the results of the examination.