Symptoms of asthma include:
Wheezing (a whistling sound as air is forcibly expelled)
A persistent cough
For some people with asthma, a chronic cough is the main symptom.
Symptoms of a severe asthma attack can include:
Extreme shortness of breath
A rapid pulse
Flared nostrils and pursed lips
A need to sit upright
A bluish discoloration of the lips and fingernails
Between asthma attacks or flare-ups, people with mild or moderate asthma may not have any symptoms.
In some people, symptoms flare up only during or after exercise.
People with asthma tend to have more severe symptoms when they have an upper respiratory infection such as a cold or the flu.