ABSCESS AND GANGRENE OF THE PERIANAL REGION.
LARVAE OF HOUSE FLY IN A PERIANAL WOUND!
GANGRENE OF THE SCROTUM AND PERIANAL REGION FOLLOWING KSHAR-SUTRA (AYURVEDIC PROCEDURE) FIXATION IN A ANAL FISTULA.
COMPLICATED HEMORRHOIDS
Cancer of anus with larvae of housefly.
An irreducible rectal prolapse.
TUBERCULAR ANAL FISTULAE IN A 10 YEAR OLD BOY
It is better to avoid these complication rather than treating them after they evolve. No anal symptoms should be ignore, better you consult the specialist at the first appearance of the symptoms.