There are many symptoms and manifestations of pillow fall, such as neck pain, limited neck movement, abnormal neck rattling and so on. 1. Neck pain: the main clinical feature of neck pain after falling asleep, the pain is more intense and widespread, in addition to neck pain, and may even cause shoulder pain, chest and back pain. 2. Restriction of neck activities: pillow fall will lead to stiffness of the neck, limited activity phenomenon, can show that the neck is stiff, can not be free to move, such as bending, turning the head and so on. 3. Abnormal neck rattling: pillow fall may also lead to abnormal neck rattling, especially in the slight activity of the neck, you can hear the neck clicking sound. Falling pillow may also have other symptoms, if it continues to be unrelieved, it is recommended to go to the hospital in a timely manner to improve the examination, after a clear diagnosis, take standardized treatment in accordance with the doctor’s instructions, and do not ignore the symptoms and take them lightly.