[Anaphylactic shock after readministration of rifampicin: a case report].

Many reports have shown that rifampicin could induce a variety of adverse effects. However, anaphylactic shock occurring after readministration of rifampicin, to our knowledge, has not been reported thoughtfully. Herein we present a case with anaphylactic shock after readministration of rifampicin. The possible mechanism may be the interaction between IgE antibody and mast cell or basophils. Compared with continuous regimen, intermittent rifampicin regimen has longer interval to accumulate more rifampicin-induced antibodies, and more immunogenic side effects are the sequelae when re-encountered with rifampicin.