<unk>  is a cutaneous condition that presents as sharply demarcated, bright,<unk>  erythema extending 2–3 cm around the anal verge. Also called<unk>  streptococcal dermatitis, it is caused by group A beta-hemolytic streptococcus and occurs mainly in children between six months and 10 years of age. Symptoms include fever, perhaps high fever.
Perianal cellulitis
Anal fissure
Anal fistula
Perianal hematoma
Anal dysplasia
Anal cancer
Anorectal abscess
Rectal prolapse