Differential Diagnosis of Adult Asthma

Adults are rarely seen in the ED with their first presentation of asthma and they usually are aware of their condition. A confident diagnosis of asthma cannot be made on a single visit to the ED and conditions that may mimic asthma (see below) acutely should be considered:

Conditions that mimic asthma6
COPD
Inhaled foreign body
Interstitial lung disease
Airway stenosis
Bronchiectasis
Heart failure
Lung cancer
Tuberculosis
Congenital heart disease
Pulmonary embolism
Cystic fibrosis
Breathing pattern disorders/panic attacks
Gastro-oesophageal reflux (GORD)
Upper airway cough syndrome
Chronic cough syndrome
Pertussis