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.
Muscle Strain or Fatigue. Muscle fatigue or strain is the most common cause of leg soreness. Usually, a muscle strain happens from increased activity and causes a minimal amount of soreness. The soreness is easily relieved by rest and cold or warm compresses.