- Children who have one of the following conditions will be excluded from the study: are less than 2 years of age, have signs of severe exacerbation (Pediatric Asthma Score of more than 11), have used oral steroids in the last 2 weeks, have chronic lung disease (e.g., cystic fibrosis), have been given IV solumedrol, or vomit two doses of dexamethasone in emergency department.