Short answer · Medically reviewed summary · Last updated: 2026-05-08
Arachnoiditis, often referred to as adhesive arachnoiditis, is a painful inflammatory condition of the arachnoid lining surrounding the spinal nerves. While the term Arachnoiditis is the standard clinical identifier, it is historically and interchangeably documented as chronic adhesive arachnoiditis or spinal arachnoiditis in medical literature. Why does Arachnoiditis have multiple names? The nomenclature for Arachnoiditis has evolved alongside our understanding of spinal pathology.
8 people with Arachnoiditis have shared their first-person experience on this question at DiseaseMaps.
Arachnoiditis synonyms
Other names for Arachnoiditis: synonyms, acronyms and related terms used by doctors and patients.
Arachnoiditis, often referred to as adhesive arachnoiditis, is a painful inflammatory condition of the arachnoid lining surrounding the spinal nerves. While the term Arachnoiditis is the standard clinical identifier, it is historically and interchangeably documented as chronic adhesive arachnoiditis or spinal arachnoiditis in medical literature.
Why does Arachnoiditis have multiple names?
The nomenclature for Arachnoiditis has evolved alongside our understanding of spinal pathology. Historically, older medical texts may refer to it as "chronic meningitis" or "spinal meningitis," though these terms are clinically imprecise today. The condition is frequently called adhesive arachnoiditis to emphasize the pathological process where the arachnoid membrane becomes inflamed and creates scar tissue that causes nerve roots to adhere to one another. Medical professionals currently prefer Arachnoiditis as the formal diagnosis, though researchers may use specific descriptors based on the cause, such as "post-surgical arachnoiditis" or "infectious arachnoiditis."
How is Arachnoiditis classified in medical systems?
Standardized coding systems are essential for diagnosis and insurance purposes. Arachnoiditis is classified as follows:
- ICD-10: G03.9 (Meningitis, unspecified) or G03.8 (Other specified meningitis), often requiring additional codes for the underlying cause.
- Orphanet: Listed under ORPHA:1039, identifying it as a rare neurological disorder.
- OMIM: While not a single genetic condition, Arachnoiditis is documented in clinical databases as a significant neurological complication.
What should patients know about the terminology?
Understanding these synonyms is vital when reviewing medical records or searching for clinical research. Whether your records state adhesive arachnoiditis, spinal arachnoiditis, or simply Arachnoiditis, they all refer to the same inflammatory process affecting the nervous system. With 423 members of the DiseaseMaps community currently navigating this diagnosis, it is clear that consistent terminology helps patients connect with others sharing similar experiences and treatment protocols.
Next steps
- Consult a board-certified neurologist or neurosurgeon to review your specific diagnostic imaging (MRI).
- Connect with the 423 members on DiseaseMaps.org to discuss shared experiences and symptom management strategies.
- Keep a detailed log of your symptoms, such as burning sensations or bladder dysfunction, to assist your specialist in evaluating treatment efficacy.
Medical disclaimer: This content is for informational purposes only and does not constitute professional medical advice, diagnosis, or treatment.
References
- NIH Genetic and Rare Diseases Information Center (GARD): Arachnoiditis.
- Orphanet: Arachnoiditis (ORPHA:1039).
- The Arachnoiditis Foundation: Clinical Resources and Patient Guidelines.
Posted May 18, 2019 by nancy 2500
Posted Dec 10, 2019 by Josh 2600
Arachnoiditis, like other brain and spinal cord diseases, can create a systemic or generalized autoimmune disorder with immunodeficiency.21-23 This is believed to occur when inflammatory by-products and/or brain or spinal cord tissue reach the general circulation.22,23 Auto-immune manifestations include arthritis of joints, muscle pain, thyroiditis, and small fiber neuropathies. Some arachnoiditis patients are first diagnosed with an autoimmune disorder such as systemic lupus erythematosus or Hashimoto’s. Some are diagnosed with fibromyalgia.
Since nerve roots of the cauda equina have multiple connections to various internal organs, a variety of symptoms may occur depending upon the anatomical location of the inflamed and entrapped nerve roots.These may include the stomach and intestine including the rectum and anus. Food sensitivity, nausea, vomiting, constipation, diarrhea, urinary and fecal incontinence, may all occur in different patients. Sex organ, bladder and bowel function may be adversely affected. In severe cases incontinence and impotence may occur. Breathing symptoms, including shortness of breath may occur. Leg and feet impairments are extremely common including foot drops, unsteady gait, and weakness in the legs and feet. Paraparesis is relatively common and even total paralysis from the waist down is known to occur.7,8
Physical Signs
The major physical signs in an AA patient are to be found in the lower extremities and back. Physical signs in the legs include weakness, instability, poor balance, and abnormal reflexes. Pain may occur with extension or stretching of the legs. Paraparesis of the lower legs may occur. AA patients usually have more pain on one side of the body than the other. Consequently, the patient will often tend to favor one side, constantly leaning in a position that lowers their pain. Over time, this attempt to find comfort and relief produces asymmetrical muscle groups in the back with observable areas of muscle hypertrophy and atrophy.8
If paraspinal muscles and soft tissues have been bathed in chronic cerebral spinal fluid seepage, they may scar and contract. Consequently, patients may not be able to fully extend their arms and legs. Chronic cerebral spinal fluid seepage may also cause considerable contraction of the soft tissues between the skin and spine resulting in an indentation of midline, tissue along the lower spine and occasionally discoloration.
Posted Jan 5, 2020 by Jcrandall72 2500
Posted Jan 8, 2020 by Rhonda 1600
Posted Jan 12, 2020 by Staplehurst17 4050
Adhesive arachnoiditis
Chemically induced adhesive arachnoiditis
And the classic failed back syndrome
Posted Jul 9, 2020 by Derek 3000
Chronic meningitis
Posted Jul 22, 2021 by Vincent 3420
Posted Jan 7, 2022 by Machinetoolmkr 5550
