Common causes of pain on the left side of the body include infection and injury to muscles, nerves, or internal organs, such as the heart, spleen, left lung or kidney, pancreas, and more.

Discover why your body favors one side with pain, from handedness to stress, and learn ways to ease discomfort.

many conditions that are not specific to your left-hand side (like ovarian cyst ruptures) can be felt on that half of your body. Pain in your left side does not mean you have any of the following ...

Neck pain on the left side usually results from a benign cause, like muscle strain from sleeping in an awkward position. Sometimes, a more serious cause may be a tumor or rheumatoid arthritis.

The spleen is a fist-sized organ tucked behind the rib cage on the left side of the body. When it enlarges (medically known ...

If you have chest pain on the left side, your first thought may be that you’re having a heart attack. While chest pain can be a symptom of heart problems, that’s not always the case.