Tehran University of Medical Sciences Archives of Anesthesiology and Critical Care 2423-5849 10 Supp. 1 2024 05 02 515 522 Hojat Rastegari Department of Emergency Medicine, Khatami AL Ambiance Hospital, Zahedan University of Medical Sciences, Zahedan, Iran. Mehdi Heidari Department of Anesthesiology and Critical Care, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran. & Clinical Immunology Research Center, Ali IbneAbitaleb Hospital, Zahedan University of Medical Sciences, Zahedan, Iran. Aliakbar Keykha Community Nursing Research Center, Zahedan University of Medical Sciences, Zahedan, Iran. & Department of Medical-Surgical Nursing, School of Nursing and Midwifery Zahedan University of Medical Sciences, Zahedan, Iran. 2024 01 12 2024 01 30 Tension pneumothorax (TPT) in trauma patients is an uncommon disorder caused by the progressive accumulation of air in the pleural cavity. In pre-hospital and emergencies, if it is not diagnosed and treated on time, it endangers the lives of patients. In this study, we report a patient who developed tension pneumothorax and extensive subcutaneous emphysema due to mild trauma and not going to the hospital in the early hours, which caused an anaphylactic appearance on the patient's face. https://aacc.tums.ac.ir/index.php/aacc/article/view/930