Concurrent bilateral pneumothorax is a rare entity of primary spontaneous pneumothorax. This disease usually causes chest pain and shortness of breast. We report a 17 year-old male patient who suffered from dizziness for more than 8 months. Occasional and transient chest pain was also complained. The chest radiograph showed bilateral pneumothoraces. The patient underwent bilateral tube thoracostomies immediately and bilateral thoracoscopies later. In a right lateral decubitus, a left apical bleb was found by thoracoscopy and excised through a left axillary minithoracotomy. Then the patient was placed in a left lateral decubitus. The right apical bleb was removed using the same procedures. The postoperative recovery was uneventful and the patient was discharged on the third postoperative day. One week after the operation the chest radiograph revealed no recurrence of the disease and dizziness was completely resolved.