Per GINA guidelines, classification of asthma is determined:

Rationale: A. While quality-of-life scores are important for assessing the personal impact of the disease, they are not the scientific criteria used for formal asthma classification. These scores are subjective and can vary based on the patient's perception of symptoms rather than the clinical severity of the airway obstruction. GINA guidelines utilize more objective measures related to the intensity of treatment required to maintain disease control. B. The requirement for daily steroids is a component of the treatment plan but does not, on its own, define the asthma classification. Many patients with moderate or severe asthma require daily steroids, but the classification is based on how well those steroids work at various doses. Classification is a retrospective assessment of the difficulty involved in achieving control, rather than just the presence of a specific prescription. C. The frequency of reliever medication use is a metric for determining current asthma control, not for the baseline classification of the disease severity itself. High reliever use indicates poor control and an increased risk of exacerbations, but it does not tell the provider how "severe" the underlying asthma is. A patient might have severe asthma but use few relievers because they are already on high-dose controller therapy. D. According to the Global Initiative for Asthma (GINA) guidelines, asthma severity is officially classified retrospectively based on the level of treatment required to control symptoms and exacerbations. For example, mild asthma is controlled with low-intensity treatment, whereas severe asthma requires high-dose ICS-LABA to remain stable. This approach ensures that severity is defined by the underlying biology and the patient's actual response to pharmacological intervention.