Asthma Severity, Symptoms, Causes, and Diagnosis

Asthma spans a spectrum of severity defined by how difficult it is to control.

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What is Asthma?

  • What Are the Causes of Severe Asthma?
  • What is Eosinophilic Asthma?
  • How is Asthma Treated?
What Are the Causes of Severe Asthma?
Asthma is caused by inflammation within the small airways in the lungs. This inflammation can have multiple negative effects, including bronchoconstriction, increased mucus production, cough, and asthma exacerbations (attacks).
What is Eosinophilic Asthma?
There are several subtypes of asthma. In about half of asthma patients, the lung inflammation is associated with increased numbers of eosinophils, a type of white blood cell. Such asthma is termed "eosinophilic asthma." Increased levels of eosinophils have been associated with increased risk of asthma exacerbations.
How is Asthma Treated?
Asthma is a complex disease for which different medications are used to treat different components of the disease. Treatment occurs in a stepwise fashion involving the staged use of inhalers and sometimes oral or injected medications, depending on disease severity. Drugs have recently been developed to target the eosinophilic subtype of asthma.

Your severe asthma could be caused by increased levels of eosinophils

What happens during an asthma attack?