Prostatitis, may cause symptoms of anal pain. Prostatitis is usually associated with unclean sex, poor hygiene, frequent masturbation, holding urine for a long time, etc. Due to the presence of infection in the prostate gland, it can lead to localized enlargement of the prostate gland, which can cause chronic pelvic pain syndrome, and then it can induce anal cramps. In addition, prostatitis patients will also appear perineal swelling and pain, urinary frequency, urinary urgency, urinary incontinence and other symptoms, and in severe cases, sexual dysfunction as well as psychoneurological symptoms, such as erectile dysfunction, premature ejaculation, dizziness, fatigue, insomnia and so on. Therefore, after the symptoms of prostatitis, you should seek medical advice as soon as possible for appropriate examination and treatment, to avoid the continued aggravation of the disease.