| A rare genetic isolated palmoplantar keratoderma disorder with characteristics of non-epidermolytic, diffuse hyperkeratotic lesions affecting both the palms and the soles, associated with a tendency of painful fissuring. Contrary to the clinical findings, histologic examination reveals findings suggestive of keratosis palmoplantaris striata, with ortho hyperkeratosis featuring widening of the intercellular spaces and dis-adhesion of keratocytes in the upper epidermal layers. Caused by heterozygous mutation in the DSG1 gene on chromosome 18q12. |
