Many people experience numbness or a lack of sensation at some point in their life. It may be a hand going to sleep or a pins and needles sensitivity. This occurs when a sensory nerve becomes impinged leading to a decrease in input from that nerve to the brain. The impingement must be removed for normal sensation to return. If the impingement has been longstanding or severe it can tear or damage the nerve, which leads to ongoing or even permanent numbness.
The spine is one of the most common places for an irritated nerve to occur due to subluxation or a herniated disc. Patients of the Back Shack at times share numbness in the shoulder, arm, or fingers (commonly diagnosed as carpal tunnel syndrome) because of nerve pressure in the cervical spine or other areas throughout the body.