What is a common characteristic of moderate persistent asthma?

Moderate persistent asthma is characterized by daily symptoms that are more frequent than those seen in mild persistent asthma yet do not require daily use of quick-relief medication. Patients often experience daytime symptoms more than once a week and may have nighttime symptoms occurring on a regular basis. It is important to note that its management involves routine use of preventive medication, but quick-relief medications are not used on a daily basis.

This understanding sets option B apart as it accurately reflects the typical asthma experience for individuals with moderate persistent asthma. In contrast, symptoms occurring less than twice a week indicates a classification closer to intermittent asthma, while having only nighttime symptoms can suggest a different level of asthmatic control or classification. Additionally, severe limitation in physical activity typically points towards a more severe asthmatic condition, which would fall under the classification of severe persistent asthma rather than moderate persistent.