Beyond penicillin - rapid desensitization for specific flucloxacillin hypersensitivity.

Beta-lactam therapy for severe staphylococcal infections is associated with superior outcomes when compared to non-beta-lactam therapy. In patients with immediate hypersensitivity to beta-lactams, desensitization has been widely employed to allow beta-lactam therapy, but published protocols for anti-staphylococcal beta-lactams such as flucloxacillin are lacking. Here, we report a case and the desensitization protocol successfully used for a patient with isolated flucloxacillin immediate hypersensitivity, where a penicillin desensitization protocol would likely have resulted in an adverse drug reaction.