The trapezius is a large band of muscles across the back, shoulders, and neck. Trigger points are raised spots along a band of muscle. They can be caused by exercise, inactivity, or poor posture, like ...

Doctors use trigger point injections to treat chronic muscle pain and other issues that affect the musculoskeletal system. They can cause side effects, including temporary numbness and dizziness.

Trigger point injections may help relieve chronic muscle pain, including pain in your neck. These injections target “knots” in your muscles called trigger points that can cause pain, stiffness, and ...

If you’ve got a lump on top of your shoulder muscle, you have a good chance of it being a trapezius knot. This type of lump in the trapezius muscle — called a myofascial trigger point — is among the ...