Internal hemorrhoids can cause anal itching, seen in patients with more severe internal hemorrhoids. In the early stage, small internal hemorrhoids will only appear to bleed after defecation, and they are dripping blood after the stool. If the internal hemorrhoids are more serious, the swelling will protrude after defecation and cannot be easily wiped clean when wiping the stool, which will easily lead to residual secretions that will irritate the perianal skin and cause itching.