Clinical significance of calcium salts in synovial fluid.

and the administration of drugs such as antituberculosis therapy [8]. Interestingly, a growing number of cases are being recognized in the USA associated with dietary supplements containing L-tryphophan in which intense eosinophilia is associated with features such as musculoskeletal pain, peripheral oedema and fever. Some cases resemble eosinophilic fasciitis. These observations raise many questions about the causation of this rare and intriguing disorder.