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What Is Asthma?

Asthma is a chronic disease in which normal airflow in airways is blocked. Airways are breathing tubes taking air into and out of lungs. In asthma, airway cells produce more mucus, which becomes thicker and more sticky. Airways clog up and become inflamed, swollen and very small.

Asthma most often starts in childhood. About 6 million children have it. Children have small airways, so their asthma can be especially serious.

What Causes Asthma?

Early-onset asthma (extrinsic, or allergic, asthma) has both genetic and environmental causes. Among these are allergens (molds, pollens, animals), irritants (tobacco smoke, air pollution), weather (cold air), exercise, and infections (flu, colds). Asthma runs in families. Emotional stress may cause asthma attacks.

What Are the Symptoms of Asthma?

Symptoms vary from child to child. They include wheezing (a whistling sound during breathing), coughing, chest tightness, and trouble breathing, especially in early morning or at night.

How Is Asthma Diagnosed?

The health care provider checks symptoms, does a physical examination, and may test lung function, blood, and skin sensitivity. Lung (pulmonary) function tests (spirometry) can tell whether breathing is normal and how sensitive the airways are. However, these tests aren’t accurate before age 6. For children younger than 3, doctors may use a “wait-and-see” approach.

How Is Asthma Treated?

Asthma can be mild irregular (intermittent) (i.e., symptoms less than two times per week). It can be mild long-lasting (persistent), with symptoms more than two times per week but less than once daily. It can be moderate persistent (daily symptoms) or severe persistent (constant symptoms). Treatment depends on asthma’s severity and involves preventing symptoms and treating attacks.

Preventive anti-inflammatory drugs are taken daily for long periods. Long-term treatment involves corticosteroids given in inhalers or pills to reduce lung inflammation. These drugs are for mild, moderate, and severe persistent asthma. Quick-relief medicines are for symptomatic treatment. Short-acting bron-chodilators, often given by inhalers, quickly open swollen airways. Long-acting drugs in inhalers are used every 12 hours. Immunotherapy may help children with allergic asthma that can’t be controlled by avoiding triggers.

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Older children and teens may use small, hand-held devices called pressurized metered-dose inhalers (MDIs) or inhalers that release a fine powder. Babies and toddlers must use face masks attached to MDIs or nebulizers. A plastic tube device called a “spacer” should always be used with MDI’s.

Lifestyle and home remedies are important for asthma control. Alternative treatments that may help include breathing techniques, acupuncture, and relaxation.

DOs and DON’Ts in Managing Asthma:
  • DO have your child always carry an inhaler.
  • DO always use a spacer with an inhaler to take your asthma medicine.
  • DO make sure that your child maintains a healthy weight.
  • DO encourage regular exercise.
  • DO reduce dust mites in your house, e.g., by getting rid of carpets and using special (HEPA) filters. Clean regularly.
  • DO reduce pet dander by avoiding pets with fur or feathers or by regular bathing or grooming.
  • DO review an asthma care plan with your health care provider at least once per year.
  • DO call the health care provider if medicines don’t control the asthma or have side effects.
  • DO avoid triggers such as cold air and smoke. Maintain low humidity. Use the air conditioner and keep indoor air clean.
  • DO learn the symptoms of an asthma flare so you can start treatment at the earliest signs.
  • DON’T give your child over-the-counter medicines unless your health care provider says you can.
  • DON’T let your child come into contact with asthma triggers. Asthma may be related to cigarette smoke exposure.
FOR MORE INFORMATION

Contact the following source:

  • The American Academy of Pediatrics
    Tel: (847) 434-4000
    Website: http://www.aap.org
  • American Lung Association
    Tel: (800) LUNG-USA
    Website: http://www.lungusa.org
  • National Lung Health Education Program
    Tel: (303) 839-6755
    Website: http://www.nlhep.org

Copyright © 2016 by Saunders, an imprint of Elsevier, Inc.

Ferri’s Netter Patient Advisor