A new guideline has provided an updated definition of severe asthma along with new recommendations for treating the condition

Produced by a joint task force of the European Respiratory Society and the American Thoracic Society, the guideline is published online in the European Respiratory Journal.Although severe asthma is estimated to account for less than 10% of all asthmatics, these patients have the greatest burden and require a disproportionate amount of healthcare costs to be spent on treating their condition, which is harder to control.