Injury and overuse can cause a variety of arm muscle problems, according to WebMD. Repetitive-motion injuries occur as a result of stress to joints and tissue from continuously repeating a certain motion, such as throwing a ball or raking leaves. Other overuse injuries include carpal tunnel syndrome, bursitis and tendinitis.
Muscle mass breaks down as a person ages, increasing the chances of arm pain or injury from normal wear and tear, according to WebMD. Problems with muscle or arm pain may be minor or serious and may include symptoms of swelling, cramping, numbness, weakness or change in color.
Bursitis is caused by a buildup of fluid around the elbow joint, usually from repetitive motion activities, states NHS Choices. Most cases are treated through home care, but in some cases, swelling and infection may occur. Antibiotics may be prescribed to treat the condition. Additionally, overuse or wear-and-tear injuries may result in sprains, trapped or pinched nerves, and tennis elbow, or epicondylitis.
Polymyalgia rheumatica impacts the muscles in upper arms, shoulders, neck and hips, according to Mayo Clinic. The condition occurs from inflammation and causes symptoms of pain and stiffness within the first two weeks. It rarely affects anyone under the age of 50, and most people suffering from the condition are over 65. Symptoms of polymyalgia rheumatica are effectively treated with corticosteroids, or anti-inflammatory medications.