There seems to be a considerable difference of opinion as to just what type of reaction should be known as pustular psoriasis. There is, however, a tendency to limit the name to a condition which appears on the soles of the feet or the palms of the hands. This is sometimes associated with psoriasis on other parts of the body. Tobias1 described it as a "peculiar and rare form of pustulation and crusting involving the palms and soles." It is usually agreed that the pus when present may be sterile. Goldsmith2 stated that the condition "is generally very intractable to treatment." He cited Barber as having found some cases in which there was a pronounced exacerbation after tonsillectomy, and then a clearing up. This occurrence, of course, would rather suggest that the condition represents a reaction to the presence of bacteria. Semon3 cited Barber as
BAIRD KA. PUSTULAR PSORIASIS. Arch Derm Syphilol. 1950;61(3):485–488. doi:10.1001/archderm.1950.01530100129019
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