Hay fever and a single intramuscular injection of corticosteroid: a systematic review

The studies in this review were sound and their findings consistent: i.m. SCS therapy was shown to be efficient and safe for the treatment of hayfever in adults. This review shows no support for any concerns regarding serious tissue atrophy or other serious side-effects, any long-lasting suppression of plasma-cortisol, or any influence on stress reaction, following a single intramuscular injection of SCS.