Buttocks refers to the buttocks, and pimples may refer to pimples, blisters and other diverse lesions. Itchy pimples on the buttocks may be related to folliculitis, perianal eczema, ringworm and other diseases, and it is recommended that patients seek timely medical attention to identify the cause. 1. Folliculitis: mainly due to bacterial, fungal and other pathogens caused by follicle infection, mostly in the head, face, neck, buttocks, armpits and other parts of the head and face, can be seen in the red pimples, but also accompanied by itching, pain symptoms, and even pustules or crusts. 2. Perianal eczema: Perianal eczema mainly occurs around the anus and can involve the buttocks and other places. Common triggers include contact with allergens, perianal lesions, local irritation, etc. Patients may have lesions such as erythema and papules on the buttocks, which may also be accompanied by intense itching. 3. ringworm: this is an infectious disease caused by dermatophytes, can also appear buttocks, perianal and other parts of the pimples, blisters and other lesions, can be conscious itching. In addition, allergic dermatitis, urticaria and other diseases can also cause itchy buttocks pimples, patients should go to the hospital dermatology department in a timely manner, by the doctor to clarify the diagnosis, and the corresponding treatment.