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Fonttblf0fnilfcharset0 TradeGothicLT;f1fnilfcharset0 HelveticaNeueLT-Light; f3fnilfcharset0 LucidaGrande; hyphauto1hyphfactor90 deftab720 f0fs48 cf2 Asthma in children f1fs26 cf2 What is asthma? F2fs19 cf0 Asthma occurs when the small airways of the lungs become sensitised and then inflamed. During an asthma attack this inflammation leads to swelling of the lining of the airways.
In addition, there is a build up of mucus i (phlegm) i0 and the muscles around the airways tighten i (bronchoconstriction). I0 These factors cause narrowing of the airways and make breathing difficult.
Cf0 kerning1expnd-1expndtw-4 One in four children, one in seven teenagers and one in 10 adults suffer from asthma. Asthma can occur in very young children, although it is difficult to diagnose in children under the age of rning1expnd0expndtw0 f1fs26 cf2 What causes asthma?
F2fs19 cf0 Asthma can affect anyone and it is not known what causes. There is evidence that smoking during pregnancy or around young children may increase the risk of them developing asthma. Those with a family history of asthma, eczema or hay fever are more likely to be affected.
Doctors are not exactly sure why children with asthma have sensitive airways. A number of things may '91trigger'92 or bring on an asthma attack.
The most common trigger in children is viral infections such as the common cold. Other common triggers are cigarette smoke and allergies such as to pet hair, pollens, mould and dust mites. F1fs26 cf2 What are the symptoms?
F2fs19 cf0 Your child may have any of the following: cf0 '95 coughing (usually a dry cough) '95 wheezing (a whistle in the chest when breathing) '95 difficulty breathing '95 working hard to breathe, sometimes trying to '91suck in'92 air '95 tightness in the chest. Cf0 kerning1expnd-1expndtw-5 The symptoms vary from child to child.