When there are herniated discs in the lumbar spine, it can cause some of these common symptoms: back pain, numbness, sciatica, loss of strength, pins and needles.
If the discs in the cervical spine are affected it can produce several symptoms such as: neck pain, headaches, dizziness, loss of strength and numbness in the arms and hands, pins and needles.
What causes disc herniations and protrusions?

A loss of the normal curves in the spine can cause the body to become unbalanced and the body weight to be unevenly distributed which in turn will cause the vertebrae to misalign putting extra tension on the vertebral discs, which causes weakening and degenerating. They can also be caused by improper movements, falls, or excessive forces due to accidents.
When the discs, which separate one vertebra from another, degenerates, it can affect the spinal cord itself or the nerves surrounding the disc. The disc can deform, tear or even rupture.