The soleus muscle can cause and contribute to pain in the heel, ankle, and back of the knee. It can also cause pain in the low back on the same side of the affected leg. Dysfunction of the soleus muscle can also contribute to swelling in the foot and ankle. Occasionally a trigger point at the bottom and outside of the muscle can contribute to pain in the jaw and side of the head.
The masseter muscle is one of the muscles that you use to chew your food. Dysfunction in this muscle can contribute to pain around the eye, in the jaw, in the cheek area and the ear. It can be associated with ringing in the ear (tinnitus) and TMJ.
The sternocleidomastoid are the two big muscles located on each side of the front of the neck. These are the most affected muscles when whiplash of the head / neck occurs. The muscles can contribute to pain throughout the head and neck area and can contribute to symptoms of vertigo.
