[Pyomyositis, not an exclusively tropical disease].

: Pyomyositis is considered to be limited to tropical areas. In recent years, however, it is increasingly reported from temperate climate areas, predominantly in immunocompromised patients. Since the disease can mimic several other conditions, it may remain unrecognized for weeks. Two native patients from the Netherlands are presented, neither of them had ever travelled to the tropics. One of the patients had AIDS, the other had no predisposing factors. Pyomyositis can be difficult to diagnose, but in most cases it is easy to cure. Pyomyositis should be considered in the differential diagnosis in patients with fever and localised myalgia.