A case of fat injection for treating subcutaneous atrophy caused by local administration of corticosteroid.

A 42 year old female received intramuscular injection of 40 mg triamcinolone acetonide on the right upper arm for the treatment of pollen allergy at another clinic. Subcutaneous atrophy appeared at the injection site a few days after. Since there were no signs of improvement, the patient visited our clinic for further examination. The subcutaneous atrophy after local injection of corticosteroids is generally considered to be reversible and it improves within about 1 year after the injection. After one year since local injection, subcutaneous atrophy did not improve and we performed fat injection using autologous fat. As a treatment, we thought that the fat injection method is a superior method since it is less invasive from a cosmetic standpoint.