Airflow obstruction is at least partially reversible.
Alternative diagnoses are excluded. Assess severity Investigate potential complications Recommendations are presented for referral for consultation or care to a specialist in asthma care. Differences from 1991 Expert Panel Report Severity classifications were changed from mild, moderate, and severe to mild intermittent, mild persistent, moderate persistent, and severe persistent. Examples of questions to use for diagnosis and initial assessment of asthma were added. Information on wheezing in infancy and vocal cord dysfunction was expanded in the differential diagnosis section.