1.Blood in stool: common diseases: hemorrhoids, anal fissures, rectal polyps, rectal cancer, colorectal inflammation, etc.
2.Pain: common diseases: hemorrhoids, anal fissure, perianal abscess, anal canal cancer, anal sinusitis, anal pain.
3.Mass prolapse: common diseases: hemorrhoids, anal rectal polyps, rectal prolapse, etc.
4.Pus flow: perianal abscess, anal fistula, perianal skin disease.
5.Anal itching: perianal eczema, anal pruritus, anal parasites, etc.
6.Anal rectal swelling: inflammatory disease, anorectal cancer, anorectal neurosis, hemorrhoid impaction, prolapse, rectal prolapse, etc.