The document discusses evidence and guidelines for treating a 12-year-old girl presenting to the emergency department with an acute asthma attack. It recommends initiating inhaled bronchodilators and oral corticosteroids as first-line treatment. For increased severity, systemic glucocorticoids should be added. After discharge, high-dose inhaled corticosteroids alone or with a short course of oral corticosteroids can effectively prevent recurrence while reducing need for hospitalization compared to other medications.