Knee pain is a common condition that can affect people of all ages. It may result from injuries, such as ligament tears or fractures, or from conditions like arthritis. Symptoms often include swelling, stiffness, and difficulty in bending or straightening the knee. Treatment for knee pain varies depending on the cause. Options may include rest, ice, compression, and elevation, often referred to as the RICE method. Physical therapy and medications can also help alleviate pain and improve mobility. In some cases, surgical intervention may be necessary to address underlying issues.