Pillow fall, also known as loss of pillow, is one of the common soft tissue injuries of the neck. It is mostly seen in young adults, more men than women. The incidence is higher in spring and winter. The pillow is too high, too low or too hard during sleep. Or poor sleeping posture, head and neck deflection, so that the neck muscles are stretched for a long time, in a state of excessive tension and static injury. The injury often involves one side of the soft tissue, such as the occurrence of sternocleidomastoid muscle, trapezius muscle or scapular muscle spasm. Diagnostic points】 After waking up from sleep, neck pain occurs, head is often tilted to the affected side, movement is unfavorable, and the neck cannot rotate freely. When looking backward, the whole trunk must be turned backward. The pain may spread to the back of the shoulder. The neck muscles are spasmodic and painful to touch, like strips or blocks. The trapezius and rhomboid muscles also have pressure pain. Treatment】 Massage and physiotherapy can be used to release the muscle spasm, and later strengthen the neck activities, most can gradually recover.