Inflammation of one or more nerves, causing pain, tenderness, numbness, or loss of function. It can affect peripheral nerves (outside the brain and spinal cord) or cranial nerves.
From Greek 'neuron' meaning nerve and '-itis' meaning inflammation. First used in medical literature in the mid-19th century as understanding of nerve anatomy and pathology developed.
Neuritis was one of the first neurological conditions to be clearly distinguished from other nerve disorders, helping establish neurology as a medical specialty. The condition can range from mild tingling to complete paralysis, and famously affected historical figures like Franklin D. Roosevelt, whose polio-related neuritis contributed to his leg paralysis.
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