A drop pillow usually does not cause head pain and dizziness symptoms, as detailed below. First, a drop pillow can cause spasmodic pain in the neck muscles, the medial scapular muscles, and the trapezius muscle when it occurs. The cervical spine often has to favor one side for pain symptoms to be relieved. High and low shoulders and significant restriction of cervical movement can occur in the shoulder joint, and severe pain can be induced when turning the head. Within a few hours after waking up in the morning, the neck muscles will feel obvious strain pain and cannot maintain normal upright posture, so bed rest is often required. Second, the symptoms of headache and dizziness are often caused by cervical spondylosis and migraine.