What is the most appropriate next step for a 15-year-old boy with worsening asthma symptoms?

In this scenario involving a 15-year-old boy with worsening asthma symptoms, the most appropriate next step is to replace the current inhaled corticosteroid, beclomethasone, with inhaled budesonide-formoterol.

Budesonide-formoterol is a combination inhaler that provides both anti-inflammatory and bronchodilator effects. This makes it effective for both maintenance and relief of asthma symptoms. The replacement is particularly advantageous as it offers better symptom control in patients whose asthma is not adequately managed with a single inhaled corticosteroid alone.

Considering the patient's worsening symptoms, transitioning to a medication that combines the actions of a corticosteroid and a long-acting beta-agonist could provide enhanced relief and control, particularly in a scenario where the boy may be experiencing more frequent or severe exacerbations. Additionally, using budesonide-formoterol twice daily can also simplify the treatment regimen while ensuring effective management of asthma.

This option demonstrates an understanding of the importance of optimizing therapy in response to worsening symptoms, allowing for better overall asthma control.