A 12 year old boy presents with a persistent non-productive cough for 5 weeks, associated with nocturnal paroxysms, inspiratory whoops, and intermittent post-tussive vomiting. He also experienced on and off wheezing.
He was anorectic, and lost around 2 kg of weight during the same period. His symptoms did not respond to a course of Amoxicillin.
He was completely healthy earlier, with unremarkable medical and surgical histories. All immunizations are up to date.