The symptoms of anal discomfort associated with prostatitis may be caused by irritation of the perianal tissues, mainly due to direct stimulation of inflammation, prostate compression and so on. 1. Direct stimulation: acute prostatitis can lead to peripheral edema, oozing, stimulation of perianal nerves, causing localized swelling and pain and discomfort. 2. Prostate compression: prostatitis can cause the prostate to increase in size, further compression of adjacent surrounding tissues, stimulation to the anus, will cause perianal discomfort. If the symptoms are abnormal, you need to consult a doctor in time to observe, you can through rectal fingerprinting, MRI and colonoscopy, etc., after diagnosing the cause of the disease in the clinic under the guidance of standardized treatment, to avoid delays in the condition.