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Arachnoiditis 

Arachnoiditis
Chapter:
Arachnoiditis
Source:
Neuropathic Pain: A Case-Based Approach to Practical Management
Author(s):

Zeeshan Malik

, Shilpadevi Patil

, Sailesh Arulkumar

, and Rinoo V. Shah

DOI:
10.1093/med/9780190298357.003.0029

Arachnoiditis is a rare debilitating condition characterized by back pain, paresthesias, decreased truncal movement, lower extremity weakness, and decreased reflexes. The arachnoid mater is the middle layer of the meninges that envelope the spinal cord and brain. The dura mater lies on the outer layer of the meninges, arachnoid mater in between, and the pia mater lying closest to the neural tissue. These three layers provide protection and blood supply to the areas they surround. Arachnoiditis is the inflammation of the arachnoid layer that can occur after an insult is encountered to this layer. It causes swelling of the arachnoid layer, which eventually leads to scarring from collagen deposition over time. Arachnoiditis may become a chronic condition that can be difficult to treat.

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