A 52-year-old woman complains of face distortion. It appeared 2 days ago after exposure to cold. Objectively: body temperature is 38,2°C. Face asymmetry is present. Frontal folds are flattened. Left eye is wider than the right one and cannot close. Left nasolabial fold is flattened, mouth corner is lowered. Examination revealed no other pathology. Blood count: leukocytes -10 × 109/l, ESR - 20 mm/h. What is the most probable diagnosis?