Localized eosinophilic fasciitis.

Two patients developed an erythematous, rock-hard induration of their forearms after strenuous physical activity. Peripheral eosinophilia was noted in one patient, but hypergammaglobulinemia was absent. Systemic corticosteroid treatment resulted in remarkable involution of the process in one patient, while the other experienced spontaneous involution. The histologic changes were those of eosinophilic fasciitis.