[Importance and variability of symptoms in chronic obstructive pulmonary disease. Their significance for treatment]

Assessment of patients with COPD has changed in the last few years by adding subjective patient evaluations to traditional measurements based on pulmonary function. One of the most recently studied variables is symptom variability during the day and, specifically, patients' perceptions of these symptoms in the first few hours of the day. To evaluate this feature, two new symptom questionnaires, the Capacity of Daily Living in the Morning (CDLM) questionnaire and the Global Chest Symptoms Questionnaire (GCSQ), have recently been developed. Recent studies have begun to provide data on the effect of the available treatments on these morning symptoms, yielding information on the rapidity of action of budesonide/formoterol with a significant and nearly clinically relevant effect on morning activities. Confirmation of these results could lead to future strategies designed to earlier symptomatic improvement, which could lead to greater treatment adherence.