Tweet. Trapezius pain is caused by serious strain or injury around the neck muscles. This is mainly associated with increase in stress or strenuous work. This condition feels like a burning or throbbing sensation along the neck to the shoulder and it may be felt at the base of the head.n general, trapezius is the muscles that assist in the support of upper body, shoulder blades and the neck. A person suffering this condition will feel pain and tightness in the neck muscles. Some people feel as though there is a knot on the back along the shoulder and it is tender when you move your hand over it.