- A dictionary of medical eponyms

MacLennan's syndrome

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Symptoms are intermiitent attacks of sharp, severe, brief pain occurring in the region of the anorectal ring and the internal anal sphincter. Frequently associated with pallor, sweating, precordial pressure, and fainting. Most commonly seen in neurotic patients.


  • A. MacLennan:
    A short note on rectal crises of nontabetic origin.
    Glasgow Medical Journal, 1917; 88: 129-131.
  • T. E. Thaysen:
    Proctalgia fugax. A little known form of pain in the rectum.
    Lancet, London, 1935, 2: 243-246.

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