CHRIS PRIEST & MARK CLARKE / SCIENCE PHOTO LIBRARY CHRIS PRIEST & MARK CLARKE / SCIENCE PHOTO LIBRARY
Woman using a Becotide aerosol inhaler to control attacks of bronchial asthma. The inhaler contains the corticosteroid drug beclomethasone, which has anti-inflammatory and anti-allergic effects on the bronchial airways. In bronchial asthma the narrowing of the airways in the lung is produced by spasm of the muscles in the bronchial tubes. These spasms are associated with swelling of the lining surfaces & an increased production of secretions. Asthma may be caused by a wide range of allergic reactions, exertion, emotional upset and infections.
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