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Degenerative disk disease is when normal changes that take place in the disks of your spine cause pain.
Spinal disks are like shock absorbers between the vertebrae, or bones, of your spine. They help your back stay flexible, so you can bend and twist. As you get older, they can show signs of wear and tear. They begin to break down and may not work as well.
Nearly everyone’s disks break down over time, but not everyone feels pain. If worn-out spinal disks are the reason you’re hurting, you have degenerative disk disease.
What Causes It?
Your spinal disks are made up of a soft inner core and a tough outer wall. The disks change in ways that may cause degenerative disk disease, such as:
Dry out. When you’re born, the disks in your spine are mostly made up of water. As you age, they lose water and get thinner. Flatter disks can’t absorb shocks as well. The water loss also means less cushion or padding between your vertebrae. This can lead to other problems in your spine that may cause pain.
Crack. The stress of everyday movements and minor injuries over the years can cause tiny tears in the outer wall, which contains nerves. Any tears near the nerves can become painful. And if the wall breaks down, the disk’s soft core may push through the cracks. The disk may bulge, or slip out of place, which is called a slipped or herniated disk. It can affect nearby nerves.