Butt groove on both sides of the long pimples and itchy may be due to neurodermatitis, may also be caused by folliculitis, and may be caused by jock itch, the reason is different, the treatment method is different. 1. Neurodermatitis: neurodermatitis, also known as chronic lichen simplex, occurs in the anal area and the neck, wrists, arms, legs and other parts of the patient can appear buttocks groove on both sides of the pimples and itchy symptoms, the treatment should be avoided to avoid excessive dryness or humidity of the skin, and the use of dexamethasone ointment, tacrolimus ointment, and other medications for treatment. 2. folliculitis: folliculitis is a bacterial infectious disease that occurs in the hair follicle area, manifested as red papules around the hair follicle, accompanied by pus, itching, pain, patients with this disease can appear on both sides of the buttock groove long pimples and itchy symptoms, the treatment can be used to mupirocin ointment, fusidic acid cream and other medications for treatment. 3. jock itch: jock itch is a kind of skin infectious disease caused by dermatophytes, patients can also appear on both sides of the buttock groove long pimples and itchy symptoms, accompanied by flaking, treatment can use nitrate sertaconazole ointment, terbinafine ointment and other medications to carry on the treatment. If the symptoms of itchy buttock grooves, it is recommended to consult a doctor to find out the cause of the problem and to treat it.