Sciatica should only be regarded as symptoms, not as a disease. Various reasons can cause sciatica, including piriformis syndrome, disc herniation, stenosis, etc.

Shoulder is a shallow ball and socket joint, it provides good flexibility but vulnerable to instability.

Sprained ankle is the main reason of ankle instability, while bunion and plantar fasciitis are main sources of chronic pain.

Elbow joint has static bony structure, and able to fulfil precise and skilful target with delicate muscle groups.

Knee pain originates from irriation of knee-cap, MCL , ACL and torn meniscus, baker's cyst. Crepitus always present as symptoms.

Neck pain covers the area between skull and upper thoracic, it may also involve neuopathic pain & symptoms.

Wrist and hand are very complicated structure with delicate and complex joints, ligament, muscle and nerve. Both sport and over-use can irritate the area.

Headache covers symptoms in both skull and upper neck regions, resulting from either migraine, tension headache, cluster headache, sinus and etc.

Low back refers to the lumbar region below rib cages, the pelvic region between two hip joints, and its' pain can also be the neuropathic origin.