Acute onset disseminated superficial porokeratosis associated with exacerbation of diabetes mellitus due to development of anti-insulin antibodies.

The development of disseminated superficial porokeratosis is occasionally observed in association with renal transplant, autoimmune diseases and various hematological disorders, suggesting a certain immunosuppression may trigger a widespread abnormal keratinization. Here we report a case of sudden onset disseminated superficial porokeratosis associated with an exacerbation of diabetes mellitus due to an anti-insulin antibody formation. To our knowledge, this is the first report of disseminated superficial porokeratosis in a patient with severe diabetes mellitus.