West's syndromeAn epileptic brain disorder featuring clusters of tonic spasms and characteristic findings on electroencephalography that affects young children between 3 and 6 months of age, causing psychomotor regression. See also INFANTILE SPASMS. W.J. West was a British doctor who described the syndrome in a letter to The Lancet in 1840.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005