Bacterial infections in the hand may begin slowly after innocent wounds. They may spread rapidly especially following risk wounds. Destruction of anatomical structures causes local defects, severe loss of function and septicemia is possible. Causes, pathophysiological, clinical signs, and therapeutical management are described. It is most important and un-dispensable to have an early and exact diagnosis and consistent therapy: immediate radical surgical debridement, open wounds, antibiotic treatment, immobilisation and early mobilisation are necessary to have good results.