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.
A strain is a common cause of leg pain and results from increased activity that leads to overstretching of a muscle. While muscle strains usually cause mild soreness, a person may also experience cramping, weakness, and swelling. More sudden or severe injuries can cause a muscle tear which is significantly more painful.