Fourteen cats with crusting dermatoses ('miliary dermatitis') were supplemented with various combinations of evening primrose oil and fish oil. The cutaneous signs improved when the cats were supplemented with either evening primrose oil alone or with a combination of evening primrose oil and fish oil. Fish oil alone was unable to maintain the remission and the cutaneous signs deteriorated. The subsequent administration of a combination of the two oils resulted in a resolution of the dermatosis.