Hiatal hernias happen when the upper part of the stomach bulges through the large muscle separating the chest and abdomen. "That can potentially cause discomfort or pain under the left breast," Dr.
The shoulder blade (scapula) is one of two triangular bones in your upper back on each side of the spine ... and liver diseases typically cause right-sided referred shoulder pain. Pancreatitis ...
Back pain, whether in the upper, middle, or lower back ... keeping your hips steady and without tilting your body. Raise your left arm while bending so that your elbow points toward the ceiling.
Or, an untreated ear infection can lead to mastoiditis, an infection of nearby bone. Occipital neuralgia can cause a severe stabbing, throbbing, shooting, or electric shock-like pain behind the ears.