Table 2. Clinical features of asthma.

Common symptoms	Cough Wheeze Chest tightness Shortness of breath
Symptom variability	Episodic symptoms Diurnal symptoms Symptoms after/during exercise
Triggers	Common cold (viral infection) Allergens, e.g. dust mites, pets Cold weather Irritants smoke haze strong smells, i.e. perfumes, cleaning solutions exhaust fumes
History of atopy	Eczema Allergic rhinitis
Family history	Asthma Allergic rhinitis Eczema
Physical examination	Eczema Use of accessory muscles Hyperinflation Audible wheeze Ronchi on auscultation