what causes trapezius muscle spasms
Causes. Trapezius muscle spasms typically occur when the trapezius muscle is torn, stretched or strained. This can occur from an unexpected fall, from lifting heavy objects frequently, twisting while lifting something, or an abrupt movement that strains the trapezius muscle.rapezius muscle spasms can be painful and debilitating. Photo Credit Pixland/Pixland/Getty Images. The trapezius muscle is a large muscle located at the base of the neck, running down to the shoulder blades. A variety of conditions and actions can cause this muscle to spasm, some that require the attention of a doctor.