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

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 headaches strike one side of your head, from migraines to nerve disorders, and learn the warning signs that ...

Around 20% to 40% of individuals with lung cancer experience chest pain. While most people associate left-sided chest pain with a heart attack or other heart ailments, right-sided pain is also ...

Pain in the back of your knee when walking? Learn the causes, symptoms, and best treatments to relieve discomfort and prevent ...

Reds outfielder Jake Fraley has been scratched from the lineup on Monday night due to left side pain. Blake Dunn moved from left field to right field to take Fraley's place. Jacob Hurtubise slides ...