The next muscles to become stiff and painful are those of the neck, especially the sterno-mastoid and trapezius.
"Manual of Surgery" by Alexis Thomson and Alexander Miles
C. Clavicular attachment of the trapezius muscle.
"Surgical Anatomy" by Joseph Maclise
In time other muscles compensate in part for the loss of the trapezius.
"Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition." by Alexander Miles
An analogous region, but of only slight depth, exists in quadrupeds; its borders are formed by the mastoido-humeral and trapezius muscles.
"Artistic Anatomy of Animals" by Édouard Cuyer
John A Jane, the actor's attending physician, said Mr Reeve 's ability to flex his right trapezius, a shoulder muscle in the back, and to make some movement on his left side "means that impulses are getting through the area of injury.".
Orioles right fielder Chris Davis scratched with right trapezius strain.
Estée Lauder Has Robbed Carolyn Murphy of Her Trapezius .
Model Carolyn Murphy's left trapezius appears to be in order, but her right one appears to have taken a vacation.
Estée Lauder Has Robbed Carolyn Murphy of Her Trapezius.
Although there are exercises (such as trapezius shrugs ) and programs such as Muscle Activation Techniques, which may help, the true "cause" lies within your posture and becoming aware of it.
Switch to this exercise for greater trapezius growth.