Difficult clinical management of anti-tuberculosis DRESS syndrome.

We describe 11 cases of anti-tuberculosis DRESS (drug-related rash with eosinophilia and systemic symptoms) syndrome, a potentially serious complication of treatment that led to interruption of treatment for prolonged periods, systemic corticosteroid use and the resumption of treatment with less effective regimens. All patients had rash and toxic hepatitis, one died of multi-organ failure and, contrary to expectations, the evolution of tuberculosis (advanced in most cases) did not progress under corticosteroid treatment. The drug most frequently involved was rifampicin, while retreatment schemes included, in most cases, levofloxacin, ethambutol, streptomycin and cycloserine.