Inverse Gottron's papules: an unusual cutaneous manifestation of juvenile dermatomyositis.

Dermatomyositis is an autoimmune inflammatory myopathy characterized by unique cutaneous features. Gottron's papules are pathognomonic, lichenoid papules that can be found overlying the joints of the dorsal hand. Papules on the palms of the hand are less commonly seen, especially in the pediatric age group.

Clear cell papulosis in Hispanic siblings.

Background: Clear cell papulosis is a rare condition that has been reported in 14 children, all but 1 of whom are of Asian descent. It was first described in 1987 and is thus named because of the presence of clear cells in the epidermis.

Observation: We describe the cases of 3 Hispanic children in the United States with clear cell papulosis.

Linear IgA dermatosis with IgA and IgG autoantibodies to the 180 kDa bullous pemphigoid antigen (BP180): evidence for a distinct subtype.

Background: Autoantibodies in linear immunoglobulin A (IgA) disease (LAD) are reported to be of IgA class and directed against a 97-120 kDa epidermal antigen.

Methods: We report a 39-year-old woman with clinical features of LAD and with circulating IgA and IgG autoantibodies to the 180 kDa bullous pemphigoid antigen (BP180).

Results: Histopathology of lesional skin revealed a subepidermal blister with mixed inflammatory cell infiltrate.