What disease causes anal itching and blood when wiping after bowel movements?

Itchy anus and blood when wiping may be caused by anal fissures. If patients experience difficulty or straining during bowel movements, excessive force during defecation can irritate the mucous membrane of the anal canal, leading to anal fissures accompanied by bleeding. In patients with hemorrhoids, impaired venous return in the rectal and anal areas can lead to local formation of hemorrhoidal masses, which may also cause itching. Bleeding when wiping can occur if the hemorrhoidal mass ruptures.