Causes of neck pain include: 1  Abnormalities in the bone or joints. 2  Trauma. 3  Poor posture.  Degenerative 1  diseases. Tumors.  Muscle strain.
1 Repetitive, excessive sports, especially in the form on running, can lead to trauma that creates leg pain - E.G: shin splints and stress fractures. 2  Leg pain with an underlying medical cause may be nerve-related, musculoskeletal or vascular.  Some forms of leg pain resolve with self-help care.
Many conditions can cause leg pain and weakness. According to the University of Maryland Medical Center, leg pain can be caused by overuse injuries, inflammatory diseases, lower extremity trauma and certain medical conditions. In some cases, leg pain is accompanied by lower extremity weakness. Simultaneous leg pain and weakness may signal a serious underlying condition, especially if the weakness develops rapidly. A person may first notice leg weakness when climbing stairs or performing other activities of daily living.