Usually begin via blocked anal gland (leads to infection/abscess formation)
Can progress to involve any of the potential spaces.
Can progress to involve any of the potential spaces.
Crohn's disease
Chronic constipation
Diabetes mellitus
Chronic corticosteroid use
Anorectal abscess
Anal fissure
Anal fistula
Anal malignancy
Rectal prolapse
Anal tags
External hemorrhoid
Internal hemorrhoid