Joints are those parts of your body where your bones meet and it allows the bones of your skeleton to move. Joints include shoulders, hips, elbows, and knees. Joint pain refers to aches, soreness, and discomfort in any of the mentioned joints. Sometimes it can be the result of injury or illness. Symptoms of joint pain include redness, swelling, stiffness, weakness, locking of the joint, etc. Joint pain ranges from mildly irritating to debilitating and can last up to a few weeks (acute) or several months (chronic).