CHRONICITY in spite of treatment is a characteristic of all varieties of parapsoriasis. Therefore, any method of therapy which may favorably alter its chronic course is worthy of trial.
In September, 1948, in the dermatologic service of the late Dr. J. Gardner Hopkins at the Veterans Administration Hospital, Bronx, N. Y., my colleagues and I saw a patient with parapsoriasis of the guttate type, who, after exposure to Florida sunlight, made a complete recovery but had a relapse on his return to New York. Because of this experience, it was thought that vitamin D2 therapy might be of value in this disease. This patient and another, successfully treated with calciferol, were presented at a meeting of the Manhattan Dermatologic Society on Feb. 8, 1949. Descriptions of these two patients and two additional ones were published in a preliminary report.1
Prior to our observations and independently of them, Barber
CANIZARES O. PARAPSORIASIS: ITS TREATMENT WITH CALCIFEROL: Review of Eighteen Cases. AMA Arch Derm Syphilol. 1952;65(6):675–684. doi:10.1001/archderm.1952.01530250039004
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