“…Simi larly, the activity of a number of enzymes active in the metabolism of carbohydrates in epidermis has been found to be increased in the psoriatic lesions (9,12). The possible correlation between clinical diabetes and psoriasis has been the sub ject of several eon troversial studies (22). An increased incidence of diabetes in psoriatics has been reported by several workers (l , 20) while no such association has been found in other studies (3,7,16).…”