AKT-0854
A 27-year-old man presents with a persistent cough for the past 20 days which initially started with a few days of cold symptoms. He describes it as ‘the worst cough I’ve ever had’. He has bouts of coughing followed by an inspiratory gasp. This is usually worse at night and can be so severe that he sometimes vomits. He is otherwise fit and well and confirms he completed all his childhood immunisations. Examination of his chest is unremarkable.
What is the most suitable initial management for this likely diagnosis?