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Medical Evaluation
Asthma is described according to how often you have symptoms and how severe those symptoms are. Your asthma can change, and treatment will improve it.
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Number of Days You Have Symptoms
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Number of Nights You Awaken From Asthma
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Classification of Your Asthma
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| Less than 2 days per week |
Less than 2 per month |
Mild, Intermittent |
| More than 2 per week, but less than 1 per day |
More than 2 per month |
Mild, Persistent |
| Every day, and you are using your rescue medicine everyday |
More than 1 per week |
Moderate, Persistent |
| Every day, and your physical activity is limited |
Frequent |
Severe, Persistent |
Notes on classifying severity
- Patients should be assigned to the most severe step in which any feature occurs.
- Patients at any level of severity can have mild, moderate, or severe exacerbations.
- Patients with two or more asthma exacerbations per week (that is, progressively worsening symptoms that may last hours or days) tend to have moderate-to-severe persistent asthma.
This article was reviewed and updated June 2007.
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