Anal fissures are typically caused by
a. trauma. c. herpes simplex virus infection.
b. sphincter spasms. d. incomplete hemorrhoid resolution.
A
Anal fissures are the result of trauma, such as the forced passage of a large, hard stool and anal intercourse, especially forced intercourse. Sphincter spasms may occur during the examination of anal mucosa in the presence of anal fissures. Herpes simplex virus infection produces erythematous plaques that develop into vesicular lesions that may become pustules and ulcerate. Incomplete hemorrhoid resolution appears as a spherical, bluish lump.
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