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Many of these diseases are genetic. Sometimes the cause is a medical condition such as alcoholism, a tumor, or a stroke. Other causes may include toxins, chemicals, and viruses. Sometimes the cause is not known. Degenerative nerve diseases include. 1  Alzheimer's disease. 2  Amyotrophic lateral sclerosis.
Types of Degenerative Disc Disease. Degenerative disc disease (DDD) can produce damaging change in your neck (cervical spine), middle of your back (thoracic spine) or your lower back area (lumbar spine).The problems you have will depend, in part, on the type of DDD you experience.ypes of Degenerative Disc Disease. Degenerative disc disease (DDD) can produce damaging change in your neck (cervical spine), middle of your back (thoracic spine) or your lower back area (lumbar spine). The problems you have will depend, in part, on the type of DDD you experience.