Can hemorrhoids cause anal itching?

Yes, hemorrhoids can indeed cause anal pruritus—itching around the anus. This occurs through several interrelated mechanisms. Internal or external hemorrhoids may lead to mucosal prolapse or incomplete closure of the anal canal, resulting in leakage of mucus or small amounts of stool (soiling). This moisture irritates the delicate perianal skin, triggering an inflammatory response and subsequent itching. Additionally, chronic straining during defecation—often associated with hemorrhoidal disease—can disrupt the natural barrier function of perianal skin and promote secondary fungal or bacterial colonization, further exacerbating pruritus. In some cases, scratching due to initial itchiness leads to lichenification or excoriation, creating a self-perpetuating cycle of irritation and discomfort. It’s important to note that while hemorrhoids are a common cause of anal itching, other conditions—including anal fissures, infections (e.g., candidiasis, pinworm infestation), dermatologic disorders (e.g., psoriasis, contact dermatitis), and even systemic diseases (e.g., diabetes, liver disease)—must be considered in the differential diagnosis. A thorough clinical evaluation, including digital rectal examination and, when indicated, anoscopy or colonoscopy, is essential to confirm the diagnosis and rule out more serious underlying pathology.