A 50-year-old patient has been hit by a car. The witnesses report that he has stayed unconscious for about 10 minutes. The patient complains of headache, dizziness, nausea. There was a single vomiting. Objectively: the face is pale, Ps- 90 bpm, respiratory rate - 16/min, AP- 130/80 mm Hg. What is the most likely diagnosis?