This is a double-blinded clinical trial of children diagnosed with moderate to severe
obstructive sleep apnea (OSA) on a baseline polysomnogram (PSG). Participants will receive a
3-day course of dexamethasone, an oral steroid, or placebo control and undergo two PSGs to
assess the efficacy of dexamethasone, as a treatment to manage the severity and symptoms in
children with moderate to severe OSA.