Pain localized to the cervical spine — the first seven vertebrae of the spine. It is typically felt at the base of the skull, the back of the neck, and the cervicothoracic junction where the neck meets the upper back.

"Nerve root suffering" — in the neck, nerves exit the spinal cord through small tunnels called foramina to travel down the arms. When a disc herniates (slips outward) or a bone spur grows into that tunnel, the nerve root becomes pinched and irritated.

This causes sharp, electric radiating pain that follows the dermatome path of the affected nerve root — often worsened by head movements or coughing.

Chronic compression of the spinal cord itself within the neck. Unlike radiculopathy (which affects one nerve root), myelopathy is a disease of the central "power cable" — the cord through which all signals between the brain and body pass.

It often presents subtly: difficulty buttoning shirts, deteriorating handwriting, or an unsteady gait described as walking on cotton wool or feeling intoxicated.

A reduction or loss of power in all four limbs — both arms and both legs. This is a serious neurological sign indicating significant pressure at a high level in the cervical spinal cord. Because all signals from the brain to the body must transit through the neck, compression here affects all four extremities.

Pain in the 12 vertebrae of the chest area, attached to the rib cage. Unlike the neck or lower back — which are designed for mobility — the thoracic spine is designed for stability. This means pain here is often more significant and less commonly caused by simple mechanical strain.

Compression of the spinal cord at the chest (mid-back) level. The thoracic spinal canal is naturally narrow compared to other regions, meaning even a small disc bulge or thickened ligament can produce severe cord damage.

It typically causes spasticity (stiffness and increased muscle tone) in the legs and impaired balance. Crucially, the arms remain completely normal — distinguishing it from cervical myelopathy.

Pain in the lower five vertebrae (L1–L5), which bear the bulk of the body's weight and are responsible for most spinal movement. A structural or mechanical issue within what is called the "Lumbar Motion Segment."

Sciatica is a symptom, not a diagnosis. It indicates that the sciatic nerve — formed by nerve roots L4 through S3 and as thick as a human finger — is being compressed. This compression produces intense pain, burning, or numbness that travels from the buttock down the back of the thigh and into the calf or foot.

Indicates lumbar spinal canal stenosis — a narrowing of the central channel through which the nerve bundle travels. Standing or walking upright causes the narrowed canal to compress the nerves further, reducing their blood supply (ischemia).

The characteristic pattern: the patient feels completely comfortable while sitting but after walking a defined distance, the legs become heavy, painful, or "wooden." Leaning forward or sitting opens the spinal canal and relieves symptoms rapidly — distinguishing it from vascular (arterial) claudication.

A specific focal weakness indicating that the nerves responsible for lifting the front of the foot — primarily the L5 nerve root — are severely compressed or damaged. The patient cannot walk on their heels and must lift the knee excessively high with each step to avoid dragging their toes — the characteristic "steppage gait."

The block-like front portion of a vertebral body collapses under pressure. Most commonly occurs in osteoporosis, where the internal bone architecture becomes porous and fragile. In a severely weakened bone, even a cough, sneeze, or minor impact can cause sudden, severe local pain.

The cauda equina is a bundle of nerve roots at the base of the spinal cord, named for its resemblance to a horse's tail. When these nerves are suddenly and severely compressed — most commonly by a massive disc prolapse — the result is a neurosurgical emergency.

The consequences of untreated Cauda Equina Syndrome include permanent paralysis, permanent loss of bladder and bowel control, and permanent sexual dysfunction. Time to surgical decompression is critical.