An anal fissure is a small tear in the lining of the anus, which can cause pain and discomfort during bowel movements. This condition often occurs due to passing hard stools, constipation, or straining. Symptoms may include sharp pain, bleeding, and itching around the anus. Treatment for anal fissures typically involves increasing fiber intake, staying hydrated, and using topical medications to promote healing. In some cases, a doctor may recommend procedures to relax the anal sphincter muscle if conservative treatments are ineffective. Maintaining good bowel habits can help prevent future fissures.