Severe
pain is the main symptom of acute anal fissure. Fissure produced pain at
defecation may persists for hours. A small amount of bright red blood, which may
or may not be mixed with stool, is common. A fissure produces pain
disproportionate to its size . An inadequately treated fissure may lead to
chronic fissure in which pain is relatively less and persists intermittently
for weeks and months .
