What is Nondermatomal?
Nondermatomal somatosensory deficits (NDSDs) are sensory deficits that don’t conform to the distribution of peripheral nerves or dermatomes, typically seen in the setting of chronic pain and following physical trauma.
What is somatosensory deficit?
Somatosensory deficits are a common symptom due to impairments of the peripheral and central nervous systems. Particularly, peripheral nerves almost always include sensory afferent fibers that are more sensitive to any type of disturbance than are motor fibers, and often are the cause of consultation.
Does radicular pain follow a dermatome?
Conclusion: In most cases nerve root pain should not be expected to follow along a specific dermatome, and a dermatomal distribution of pain is not a useful historical factor in the diagnosis of radicular pain. The possible exception to this is the S1 nerve root, in which the pain does commonly follow the S1 dermatome.
What causes somatosensory disorders?
Somatosensory impairment affects one’s ability to effectively process sensory information received by the skin’s sensory receptors. It can affect one’s ability to feel pain, light touch, and determine temperature. It can be caused by a number of conditions including, stroke, cerebral palsy, and brain injury.
What does the word radicular mean?
Definition of radicular 1 : of or relating to a plant radicle. 2 : of, relating to, or involving a nerve root radicular pain.
Are dermatomes reliable?
They noted that chemical substances can travel in the cerebrospinal fluid and affect neighboring nerve roots. After evaluating the literature, Lee et al22 created a composite dermatome map (FIGURE 6), based on published data from 5 papers they considered to be the most experimentally reliable.
What is a non-dermatomal pain pattern?
If all or part of the pain pattern fell outside the area designated by both reference sources for the involved nerve root, it was designated non-dermatomal. No distance cut-off was used.
What is the difference between dermatomal and non-dermatomal nerve damage?
An L5 dermatomal loss might include the back or side of the thigh, the side of the calf, and the top of the foot. Non-dermatomal refers to damage to a nerve in the periphery, distant to the root. A nerve that is damaged in the arm or leg would cause a non-dermatomal sensory disturbance.
What is a non-dermatomal sensory disturbance?
Non-dermatomal refers to damage to a nerve in the periphery, distant to the root. A nerve that is damaged in the arm or leg would cause a non-dermatomal sensory disturbance.
How common is non-dermatomal pain in lumbar spine?
Overall, pain related to cervical nerve roots was non-dermatomal in over two-thirds (69.7%) of cases. In the lumbar spine, the pain was non-dermatomal in just under two-thirds (64.1%) of cases. The majority of nerve root levels involved non-dermatomal pain patterns except C4 (60.0% dermatomal) and S1 (64.9% dermatomal).