Definition of Dermatomes

Dermatomes are areas of skin all over the body that are each innervated by a single spinal nerve. It is important for doctors to be familiar with dermatomes and their corresponding nerves – this can be illustrated in a diagram called a dermatome map – so that they can make an accurate diagnosis of spinal conditions that are causing nerve-related pain.

How Are Dermatomes Affected By Nerve Compression?

Some of the most common regions of dermatomes to be affected by spinal conditions are on the buttocks, hips, thighs, knees, calves, and feet. This is because the lumbar spine, or the lower back, contains nerves that innervate these areas. The lower back is especially prone to neural compression due to degenerative spine conditions because of its relative flexibility and the fact that it must support much of the body’s weight. The vertebrae and intervertebral discs of the lumbar spine deteriorate over time, which can lead to herniated discs, bulging discs, bone spurs, spondylolisthesis, or spinal stenosis. These anatomical abnormalities can compress lumbar nerves, particularly those at the L4 and L5 levels. Symptoms of pain, tingling, numbness, and weakness can spread through all of the dermatomes innervated by these nerves.

Treatment Options

If discomfort in one or more dermatomes indicates neural compression, your doctor may suggest that you try a variety of conservative treatment methods, including pain medication and behavior modification. If weeks or months of conservative treatment prove ineffective at helping you to manage your symptoms and your doctor suggests that you consider spine surgery, contact Laser Spine Institute. Our minimally invasive decompression procedures utilize state-of-the-art endoscopic technology. Contact us to find out more and receive a complimentary review of your MRI or CT scan.