Mpox, previously referred to as monkeypox, was recently deemed a public health emergency in 2022. Our understanding of potential secondary cutaneous manifestations in the setting of this infection is still evolving. We report a rare case of a man who presented with erythematous, painful subcutaneous nodules on his extremities in the setting of recent mpox infection. Biopsy of a lesion from the lower legs revealed a lobular panniculitis with lupus panniculitis-like features on pathology. He was ultimately diagnosed with a unique case of reactive panniculitis secondary to mpox.
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