Some possible causes of anal itching include poor personal care habits, infections and skin conditions, according to Mayo Clinic. Other possible reasons for anal itching include medical conditions such as hemorrhoids, chronic diarrhea and anal tumors. Diseases that affect the whole body, such as diabetes, may also cause itching in the anal area.
Poor personal hygiene can lead to anal itching, notes Mayo Clinic. Washing too much or too little, and using moist wipes or toilet paper that contains perfumes or dyes can irritate the skin and cause itching. Infections, including sexually transmitted infections, can also be a source of anal itching. Parasitic infection with pinworms may also lead to persistent itching in or around the anus. Yeast infection is another potential cause.
Psoriasis and contact dermatitis are two skin conditions that may cause the rectum to itch, reports Mayo Clinic. Chronic conditions and medical problems may result in anal itching, including tumors, hemorrhoids and diarrhea.
The cause of anal itching dictates the necessary treatment for the condition, notes Mayo Clinic. For example, non-prescription hemorrhoidal ointment may stop itching caused by hemorrhoids. Doctors may also recommend lifestyle changes, such as cleaning gently after bowel movements, drying the area thoroughly, and avoiding scratching. Wearing loose cotton underwear and avoiding irritants may also help.