Lately I sometimes have, upon awakening, a spinal cord I feel a shiver through and it is warm. The shivering lasts a few seconds while the warmth a minute, maybe two. The only time I had this was coming off Cymbalta many years ago. It happened during the day. But, it was hot and caused a lot of pain throughout my muscles as well as spinal cord to the point of crying. Does anyone else have a warm and shivering feeling spinal cord?