Facial palsy, commonly known as “crooked mouth” or “hanging wind”, is a disease characterized by facial movement disorders, which is more common in life and is not limited by age. Here, let’s learn more about the early examination methods of facial palsy. 1.Taste test Taste test is to use a medical swab dipped in 50% saline to do a taste test on the front of the patient’s tongue on the diseased side, if the diseased side does not feel salty taste obviously, it can be diagnosed as hypoesthesia. When the stethoscope is struck 512Hz, if the patient feels the sound is significantly louder than the healthy side and there is a sense of irritation, it means that the patient is allergic to hearing. 3. Tear examination Tear examination is performed with Schirmer filter paper. The procedure is to ask the patient to gently close his eyes and stop for 5 minutes, if the humidity of the filter paper on the patient’s side is less than 5mm, it can be diagnosed as tear reduction.