A 14-year-old boy with no significant history presents to th…
A 14-year-old boy with no significant history presents to the clinic with his parents with reports of dyspnea and wheezing. He states that his symptoms only occur when he is running track in the cold weather. The patient’s parents explain that his two siblings have been home sick with a cough and fever. On exam, vital signs are within normal limits and lungs are clear on auscultation. Which of the following is the most likely diagnosis?