Itchy leg pimples may be caused by papular urticaria, nodular itchy rash, folliculitis and other diseases, the patient should consult a doctor in time to clarify the cause of the disease and then carry out the appropriate treatment. 1. papular urticaria: leg pimples itchy may be mosquito bites caused by local skin allergies and inflammatory reactions, accompanied by intense itching. It can lead to damages such as windswept pimples and pimples at the bites. 2. nodular itchy rash: leg acne is very itchy may also be nodular itchy rash caused by mosquito bites, gastrointestinal disorders and other factors related to the calf extension, manifested in the calf pimples, nodules and other damage. 3. Folliculitis: leg acne itchy may also be caused by bacterial infection of the hair follicle caused by folliculitis, there will be localized pimples, pimples, accompanied by itching or pain. Specifically need to go to the hospital, a clear diagnosis.