Perianal diseases include internal hemorrhoids, external hemorrhoids, mixed hemorrhoids, perianal abscess, anal fistula, anal fissure, anal papillomegaly, perianal eczema, perianal acral warts, rectal cancer, etc. All of these diseases are common diseases in anorectology. The bleeding when defecating is considered hemorrhoids or anal fissures, bleeding when defecating without pain is a sign of hemorrhoids, and bleeding when defecating with pain in the anus is considered anal fissures, and you need to ensure that the stool is clear while using medication. The sudden growth of an abscess next to the anus is considered a perianal abscess that requires surgery; perianal eczema is considered moist and itchy, you can take oral antiallergic drugs such as Desloratadine tablets to stop the itching, while the perianal area can be coated with boric acid zinc oxide ice ointment to stop the itching, once suffering from perianal diseases do not use drugs on your own, it is recommended to go to a regular hospital to see a doctor.