Palmoplantar pustulosis associated with sternocostoclavicular hyperostosis.

Palmoplantar pustulosis associated with sternocostoclavicular hyperostosis is characterized by asymmetrical and nonerosive involvement of the sternocostoclavicular joint, spine, and peripheral joints in association with palmoplantar pustulosis. This seronegative arthrosteitis has been most frequently described in the rheumatologic literature. Male and female patients are affect equally, but there tends to be a higher prevalence in Japan and Scandinavian countries. We present a case of 50-year-old man who presented with palmoplantar pustulosis that preceded his sternocostoclavicular hyperostotic symptoms by 1 to 2 years.