my 13 yr. old son has had 4 instances of pneumomediastinum.  he is an otherwise healthy athlete who plays soccer and basketball and is in excellent physical condition. last may however he took a hard fall on his back and head he was knocked unconscious. 2 weeks later after he was cleared to play soccer he had his first bout of pneumomediastinum and has 3 episodes since.
Hello, Welcome to Chat Doctor, Pneumomediastinum is a condition in which air is present in the mediastinum. It can be due to esophageal rupture, asthma, bowel rupture, blunt chest trauma, infections like cytoplasm pneumonia pneumonia and obesity. Most of the patient will present with severe chest pain, difficulty in breathing, change in voice and subcutaneous emphysema. Usually patients can be managed by Conservatively with breathing high flow oxygen. Needle may be inserted into the cavity, releasing the air. Surgery may be needed to repair the hole in the trachea esophagus or bowel. Thank you.