Childhood asthma most often starts before school age. During puberty, many children – especially boys – experience improvement, but later in life the symptoms of asthma often recur. During early life, boys more frequently have asthma; after 10 years of age, however, girls more frequently develop asthma, often with greater severity. However, with modern asthma treatment and care, most asthmatic individuals are able to lead a normal, healthy life. The lifetime risk of asthma is approximately 35%, with most cases occurring early in life, and many requiring lifelong medical follow-up and medication, and thus having an impact on health costs. Early childhood asthma and, in particular, severe childhood asthma increase the risk of chronic airway obstruction in adult life.

See the entire Childhood asthma Chapter