In recent years the medical profession has become alerted to a disease, pleurodynia, which was relatively unknown twenty-five years ago. Its frequent dramatic appearance in epidemic outbreaks over widely separated areas of the world has elicited many and varied clinical descriptions. The American reports of epidemics together with historical summary of the disease have been enumerated in a recent paper by Tasker Howard1 and his associates describing an epidemic in Brooklyn in 1942.
The great majority of the authors have stressed the extent of the epidemic, its distinctive clinical characteristics, the essentially benign character of the disease, its self-limited course free from sequelae, and its importance in diagnostic differentiation from many more serious medical and surgical conditions. In addition to the epidemic of 75 cases reported here, I have encountered many additional sporadic cases in various other communities. As knowledge and awareness of the disease picture become more widely