Polymyalgia rheumatica is a disorder that causes inflammation in the body leading to stiffness, soreness and pain, according to Healthline. The disorder can affect different areas of the body, such as the neck, shoulders, hips, thighs and arms.
As of 2015, doctors don't know what causes polymyalgia rheumatica though researchers have found that the condition is much more common among women, notes Healthline. Typically, the disorder does not appear until the age of 65, notes Mayo Clinic. The symptoms for people with polymyalgia rheumatica include anemia, fatigue, weight loss, restricted range of motion and poor appetite, according to Healthline. Treatment for the disorder is usually through low-dose corticosteroids; nonsteroidal anti-inflammatory drugs are not effective, notes the American College of Rheumatology.