CONEYL JAY / SCIENCE PHOTO LIBRARY CONEYL JAY / SCIENCE PHOTO LIBRARY
Asthma treatment. Boy using a nebulizer to treat asthma. A nebulizer delivers fine droplets of a drug into a face mask for inhalation. The drug relaxes the constricted air passages in the lungs that are a symptom of asthma. Nebulizers may be part of a patient's daily treatment, or may be used only in emergencies to treat severe acute asthma attacks.
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