From Webmd
Anus Conditions

• Internal hemorrhoids: Swollen veins inside the anus or rectum. These cannot be seen from outside the body.
• External hemorrhoids: Blood vessels that swell near the opening of the anus or bulge outside.
• Anal cancer: Cancer of the anus is rare. Infection with human papillomavirus (HPV), anal sex, and multiple sexual partners increase the risk.
• Anal herpes: Anal sex may spread the herpes viruses HSV-1 and HSV-2. Symptoms include painful sores around the anus that come and go.
• Anal warts: Infection by the human papillomavirus (HPV) can lead to warts in and around the anus.
• Anal fistula: An abnormal channel developing between the anus and the skin of the buttocks. Inflammatory bowel disease (Crohn’s and ulcerative colitis) or previous surgery are common causes.
• Anal fissure: A tear in the lining of the anus, often caused by constipation. Pain, especially with bowel movements, is the main symptom.
• Anal Abcess: A pocket of infection in the soft tissue around the anus. Antibiotics and surgical drainage may be required to effectively treat an abscess of the anus.
• Anal itching: Itching in or around the anus is a common problem. In most cases, no serious cause is responsible.
• Proctalgia fugax: Sudden, severe pain in the area of the anus and rectum, lasting seconds or minutes, then disappearing. The cause is unknown.
• Constipation: Difficulty passing stools is common, and can cause anal pain, anal fissures, and bleeding from hemorrhoids.
• Anal bleeding: Bright red blood from the anus is sometimes from hemorrhoids, but requires evaluation to rule out a more serious cause.

Read the GENESIS Disclaimer.