Non‐inflammatory nodule formation after hyperdiluted calcium hydroxyapatite treatment in the neck area

Dear Editor, Calcium hydroxylapatite (CaHA, Radiesse) is a bio-degradable, bio-stimulatory soft tissue filler. It is approved to correct moderate-to-severe wrinkles and folds and soft tissue volume loss in the face. In recent years, subdermal injections of hyperdiluted CaHA have been used as a collagen stimulator rather than a volumizing agent to improve skin laxity and firmness. CaHA shows a high safety profile compared with more invasive rejuvenation procedures, low complication rates and is generally well tolerated. In this case report we present the diagnosis and management of nodules arising from treatment of the neck with hyperdiluted CaHA.