Psychological disorder in asthma is associated with poor control and poor adherence to inhaled steroids.

Previous studies have linked psychological morbidity to poor control of asthma, but have not objectively measured adherence to treatment, and have linked poor adherence to depression, but have not measured asthma severity. This study assessed asthma and psychological morbidity and objectively measured adherence to medication and showed that psychological morbidity in those with asthma is significantly increased when control of asthma is poor, especially when control is poor and adherence to inhaled steroid regimen is low.