Inflammation of the basal portion of the arachnoid membrane and the space beneath it that surrounds the brain and spinal cord.
From 'basial' (base) + 'arachnoid' (spider-web-like membrane) + '-itis' (inflammation). A variant or more precise term than basiarachnitis.
This is a serious medical condition where the protective membranes around your central nervous system get inflamed—doctors use this precise term to indicate exactly which layer and location is affected.
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