Not a Cause of acute anal pain:
Ans. (c) Fistula in anoRef: Bailey & Love 26/h ed. /1259Clinical Features* Thrombosed hemorrhoids# External hemorrhoids are located distal to the dentate line and are covered with anoderm. Because the anoderm is richly innervated, thrombosis of an external hemorrhoid may cause significant pain.# Internal hemorrhoids may prolapse or bleed, but rarely become painful unless they develop thrombosis and necrosis (usually related to severe prolapse, incarceration, and/or strangulation).* Acute anal fissure# Characteristic symptoms include tearing pain with defecation and hematochezia (usually described as blood on the toilet paper)* Fistula in ano# Patients usually complain of intermittent purulent discharge (which may be bloody) and pain (which increases until temporary relief occurs when the pus discharges).# Schwartzs 9th ed and oxford textbook of surgery do not mention pain as a feature of fistula in ano* Perianal abccess# Severe anal pain is the most common presenting complaint. Walking, coughing, or straining can aggravate the pain.
Thrombosed hemorrhoids
Acute anal fissure
Fistula in ano
Perianal abccess
Disorders of the Anal Canal