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Aseptic meningitis as a complication of scinticysternography utilizing 111Indium-dtpa
Abstract:
The intrathecal administration of numerous substances has been known to cause arachnoiditic as well as aseptic meningitic reactions. Pleocytosis and increased protein in the CSF are well known findings following administration of air or myelographic dyes. This has also been observed with antibiotics. Even intrathecal steroids (e.g. depo-medrol) have been implicated in aseptic meningitic reactions. Despite the wide variety of causative agents, only a small percentage of patients develop clinical manifestations of aseptic meningitis. Are these reactions then caused by specific auto-immune type responses, or are they directly related to local irritants in each case, or a combination of both factors?
Insights
Intrathecal administration of substances can cause aseptic meningitis, characterized by cerebrospinal fluid (CSF) changes. The exact cause remains unclear, possibly involving immune responses or local irritation.
Area of Science:
- Neurology
- Immunology
- Pharmacology
Background:
- Intrathecal administration of various agents is known to induce arachnoiditis and aseptic meningitis.
- Cerebrospinal fluid (CSF) analysis often reveals pleocytosis and elevated protein levels post-administration.
Observation:
- Substances like air, myelographic dyes, antibiotics, and intrathecal steroids (e.g., Depo-Medrol) have been implicated.
- Clinical manifestations of aseptic meningitis occur in only a small fraction of patients despite diverse causative agents.
Findings:
- The precise mechanism underlying aseptic meningitis post-intrathecal administration is not fully elucidated.
- Potential causes include specific autoimmune responses or direct irritation from local agents.
Implications:
- Understanding the etiology is crucial for managing and preventing adverse neurological reactions.
- Further research is needed to differentiate between immune-mediated and irritant-induced mechanisms.