Simultaneous pneumocephalus and meningitis as a complication of ozone therapy

Today, minimally invasive oxygen(O²)-ozone(O₃) intramuscular lumbar paravertebral injections are used to relieve pain in conditions such as low back pain. Repeated paraspinal, peridural, or spinal O₃ injections, when performed under non-aseptic conditions or not performed with proper technique, may carry a risk of parameningeal inoculation of bacteria resulting in meningitis and pneumocephalus. Although this treatment is well tolerated in most cases, the patient may sometimes develop rare but very serious complications. Our study presents a case of pneumocephaly and meningitis due to the injection of an intramuscular O₂-O₃ mixture directed into the subarachnoid space after dural puncture for the treatment of low back pain. Air-density lesions were detected in the temporal and frontal horns of the left lateral ventricle on the patient's computed tomography scan of the brain. The cerebrospinal fluid appeared slightly cloudy, with a leukocyte count of 4000/mm³, protein level of 483 mg/dL, glucose at 40 mg/dL, and chlorine at 113 mmol/L. Ensuring that ozone injection therapy is performed by qualified professionals and that strict aseptic precautions are taken before the procedure will prevent serious iatrogenic complications such as pneumocephalus and meningitis.