Diffuse exanthematous drug eruption due to intravenous immunoglobulin (IVIg) is a rare adverse event reported only in case reports. We present a case of a 71-year-old woman with a diffuse maculopapular rash 5 days after receiving an IVIg infusion for treatment of chronic inflammatory demyelinating polyneuropathy. She was managed conservatively with antihistamines; she was already receiving prednisone 25 mg daily as part of treatment for the neuropathy. The rash resolved over 2 weeks.
Keywords: Adverse event; exanthematous drug eruption; intravenous immunoglobulin.
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