Psychosis-like syndrome associated with intermittent intracranial hypertension caused by a large arachnoid cyst of the left temporal lobe

Br J Neurosurg. 2006 Jun;20(3):156-9. doi: 10.1080/02688690600776986.


Lesions on certain brain areas can cause psychiatric signs. Symptomatic arachnoid cysts can produce a variety of symptoms like headache, seizures, increased ICP, and rarely psychiatric disorders. We report a case of a young woman with a left temporal lobe arachnoid cyst, presented with headache and an atypical psychosis. A 72-h epidural ICP recording revealed incidental elevation of ICP. After a permanent shunt was placed, patient's symptoms improved substantially, and antipsychotic medication was significantly reduced.

Publication types

  • Case Reports

MeSH terms

  • Adult
  • Arachnoid Cysts / complications*
  • Arachnoid Cysts / surgery
  • Female
  • Headache / etiology*
  • Humans
  • Intracranial Hypertension / etiology*
  • Intracranial Pressure / physiology
  • Magnetic Resonance Imaging
  • Psychotic Disorders / etiology*
  • Temporal Lobe
  • Tomography, X-Ray Computed
  • Ventriculoperitoneal Shunt