Marshall County is a county located in the U.S. state of Illinois. According to the 2010 census, it had a population of 12,640. Its county seat is Lacon. Marshall County is part of the Peoria, IL Metropolitan Statistical Area.
These knots, also known as âtrigger points,â occur when your muscle fibers cannot relax. Theyâre commonly found in the trapezius muscle, a large muscle that extends from the base of your skull down your back and out to your shoulder. You can try some techniques on your own to get rid of knots, or seek professional treatment.
What Causes Muscle Knots In Your Upper Back. A âknotâ is a contraction (shortening) or spasm in a muscle. It is a place where a muscle has become âtightâ for one reason or another. Overwork is the most common cause. That doesnât mean that YOU are working too muchâit means that some of your muscles are.