Anorectal pain is a common presenting complaint. The majority of patients have an obvious cause, e.g. fissure-in-ano, perianal abscess or thrombosed haemorrhoids.

Causes

Acute

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    Fissure-in-ano

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    Perianal haematoma

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    Thrombosed haemorrhoids ( Fig. 3 )

    Figure 3, Thrombosed haemorrhoids .

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    Anorectal abscess (i.e. perinal, interspincteric, ischiorectal)

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    Trauma

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    Anorectal gonorrhoea

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    Herpes

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