Pustulosis of Sneddon Wilkinson disease and multiple myeloma

: A case of subcorneal pustular dermatosis is described, this disease is not very common. Its origin remains unknown, there are some data that indicate an immunological basis because of its associations to hematological disorders and others autoimmune diseases. The diagnosis is based on clinic suspects and the histopathological analysis. The differentiation among other dermatosis like pustular psoriasis, due to its therapeutic implication and evolution. This patient developed an IgA-K myeloma after nine years of evolution, a very common finding in this disease. It has not definitive treatment, being corticosteroids and sulfonamides more effective. The prognosis depends on the appearance of complications and associated processes.