Case Report: The role of intradermal micro-droplet hyaluronic acid injection in the correction of filler nodules complication.

Filler injection has been widely used as a non-surgical intervention for skin rejuvenation and augmentation for the past decade. Hyaluronic acid (HA) is considered the most common treated material with high safety profile. Various mechanisms, including promoting collagen synthesis are postulated the efficacy of this powerful skin rejuvenation. The greater number of its used, the more complications were seen. Among the non-vascular complications from filler injection, the most frequent one is nodule formation. It could occur as early or late onset even with HA injection. One of the causes of these nodule formation is from poor injection technique leading to visible skin beads and lumps. The current treatments of these filler side effects mainly aim to remove or reduce excessive or displaced filler product. To the best of our knowledge, there has been no report of using the intradermal injection of the micro-droplet HA to correct filler nodule and simultaneously revitalize the skin quality. This novel treatment technique could be a safe alternative for nodule formation correction.