Tingling sensation in the buttocks when urinating is suspected to be caused by anal fissure, pyriformis syndrome, urethritis and other diseases. 1. Anal fissure: the nature of the disease is ischemic ulcers, related to long-term constipation, anal canal stenosis, reduced blood supply, pathogenic bacterial infection and other reasons. Because small ulcers can exist locally, some patients with anal fissure may experience a stabbing pain in the buttocks when they urinate. 2. Piriformis syndrome: this disease is mainly caused by prolonged compression of the sciatic nerve, which is mainly manifested as pain in the buttocks, therefore, some patients are prone to buttock pain during activities, which can be manifested as a tingling sensation in the buttocks when urinating. 3. Urethritis: This disease is mainly caused by gonococcus or Chlamydia trachomatis, mycoplasma, herpes simplex virus and other pathogenic microorganisms. Most of the mild disease has no obvious symptoms, with the further development of the disease, some patients will appear frequent urination, urinary urgency and other symptoms, and accompanied by symptoms of lower abdomen and pelvic pain, often manifested as a tingling sensation in the buttocks when peeing. Patients with tingling sensation in the buttocks when urinating may also be caused by other factors, it is recommended to go to a regular hospital to improve the examination, to clarify the specific causes for treatment.