Degenerative disc disease (DDD) is a condition where spinal discs, which act as shock absorbers between vertebrae, lose their strength and hydration over time, leading to various symptoms. While not a disease itself, it's a progressive condition caused by wear and tear, injury, or aging. DDD can lead to pain, stiffness, and other problems as the discs degrade and the bones in the spine rub together.

Spinal disorders encompass a wide range of conditions affecting the spine and spinal cord, causing pain, weakness, and potentially paralysis. These disorders can stem from various causes, including injuries, infections, degenerative wear and tear, and even congenital issues. Effective management often requires a multi-faceted approach, including physical therapy, pain management, and, in some cases, surgery.

Spinal stenosis is a condition where the spaces within the spinal canal narrow, potentially compressing the spinal cord and nerve roots. This narrowing can lead to various symptoms like back pain, numbness, weakness, and potentially, more serious conditions like cauda equina syndrome or cervical myelopathy. The condition often develops gradually, particularly with aging, and can be caused by various factors like wear and tear, arthritis, or even congenital conditions.