Moon face is often associated with
Cushing's syndrome or
steroid treatment (especially
corticosteroids), which has led to it being known as
Cushingoid facies. Moon face is a type of
corticosteroid-induced lipodystrophy along with "buffalo hump", which in one study occurred in 47% of the 820 patients. Moon face is among the most frequently reported adverse events of systemic
glucocorticoids, along with
insomnia (58%),
mood disturbances (50%), and
hyperphagia (49%). Another long-term study of 88 patients on prednisone showed that lipodystrophy, such as moon face, was the most frequent adverse event, experienced by 63% of patients. == Incidence ==