Spontaneous pneumothorax leading to pneumomediastinum, pneumopericardium and surgical emphysema is a benign condition. Progression to the development of epidural pneumatosis is rare. We report a 19-year-old man who presented with dyspnoea and swelling of the chest wall following a bout of cough. Bilateral subcutaneous emphysema was palpated on the anterior chest wall from the sternum to the midaxillary regions. His chest X-ray revealed subcutaneous emphysema and pneumopericardium. His computed tomography of the thorax to rule out life-threatening conditions revealed bilateral subcutaneous emphysema, pneumomediastinum, pneumo-pericardium and pneumothorax. He was transferred to the intensive care unit. An intercostal drainage tube was inserted in the left pleural cavity. The patient was followed up with repeat chest X-rays. The patient's symptom got relieved and was discharged after day 9. Diagnosis of pneumomedia-stinum may not be as lamentable as it is seen. Close cardio-pulmonary monitoring is mandatory for complications and accompanying conditions. Most patients with uncomplicated spontaneous pneumomediastinum respond well to oxygen and conservative management. In this case, the patient's symptoms and severe tachypnoea prompted the insertion of an intercostal drainage tube.