“…Several cases of ECM have been reported after intramuscular, subcutaneous, and even after intraarticular injection of various drugs, such as non-steroidal anti-inflammatory drugs (NSAIDs), vitamin K, vitamin B12, penicillin, antihistamines, corticosteroids, local anesthetics, vaccines, and interferon-α and -β [8,9]. There are only few descriptions of necrotic ECM after treatment with GA (20 and 40 mg/day) [7,8,[10][11][12][13][14]. In 2 of these patients, further injections of GA led to another episode of ECM after well-tolerated injections in-between [10,11].…”