Carpal tunnel syndrome is a common condition that causes numbness, tingling, and pain in the hand and forearm. It occurs when the median nerve is compressed as it passes through the carpal tunnel of the wrist. 

Sciatica happens when the sciatic nerve is compressed causing pain and numbness that radiates deep into the buttock and travels down the leg.

Spinal stenosis is the narrowing of the spaces in the spine causing pressure on the spinal cord and spinal nerves. It may cause neck or back pain, numbness, and weakness in hands, arms, legs and feet.

A herniated disc is a condition that can occur anywhere along the spine, and is also known as a ruptured or slipped disc. It occurs when the inner gel-like core of a spinal disc is forced through a weakened part of the spine causing pain, numbness, and/or weakness in your back, arm, or leg.

Back pain lasting more than three months that can develop anywhere from the neck to the lower spine.