Delayed Inflammatory Nodule from Predominantly Low-molecular-weight Hyaluronic Acid Filler Secondary to COVID-19 Infection

Delayed inflammatory nodules (DIN) after soft-tissue filler injection may occur after infections, vaccinations, or procedures. We report a DIN from predominantly low-molecular-weight HA (PLMW-HA) filler secondary to COVID-19 infection that was resistant to conservative management, requiring intralesional combination therapy with triamcinolone, 5-fluorouracil, and recombinant human hyaluronidase for resolution.