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  • Letter to the Editor
  • Open Access

Intracranial hypotension and PRES

  • Yi Yang1,
  • Jian-Meng Wang2,
  • Hong-Wei Zhou3,
  • Jiang Wu1 and
  • Hong-Liang Zhang1, 4Email author
The Journal of Headache and Pain201011:238

Received: 9 June 2010

Accepted: 23 June 2010

Published: 7 July 2010


Caesarean SectionPreeclampsiaIntracranial PressureOrgan DysfunctionLumbar Puncture


Pugliese and colleagues [1] reported a female case presenting worsening of the headache and tonic–clonic seizures 7 days after epidural analgesia for a caesarean section. They proposed their diagnoses of intracranial hypotension (IH), secondary to the inadvertent dural puncture, and posterior reversible encephalopathy syndrome (PRES), which evolved from IH, based on MRI findings as well as clinical manifestations. The case is intriguing in that it helps to enrich the etiology of PRES, while we would like to raise some questions concerning the diagnosis of this case.

As regards the diagnosis of IH, the gold standard is lumbar puncture to detect the intracranial pressure. However, it was absent in this case study. In this regard, their diagnosis of IH mainly based on the presence of pachimeningeal thickening, enhancing after contrast administration is not convincing enough. The enhancement might be due to increased permeability or damage of blood–brain barrier resulting from tonic–clonic seizures of the patient [2]. In particular, Fig. 1a in their article is apparently not a T2-weighted image. Probably, it is a fluid-attenuated inversion recovery (FLAIR) image.

As far as PRES is concerned, its diagnosis and association with IH should be made with caution, since relationship between IH and PRES has not been reported in literature. Although the authors suggested two different but related mechanisms involved in IH that may lead to PRES [1], etiologies of PRES including hypertension (61%), cytotoxic medications (19%), sepsis (7%), preeclampsia or eclampsia (6%), and multiple organ dysfunction (1%) [3] should be carefully ruled out from this case.

In summary, this is an interesting case suggestive of IH and PRES by clinical and MRI findings, although the potential relationship between IH and PRES still needs further investigation.


Conflict of interest


Authors’ Affiliations

Department of Neurology, First Hospital of Jilin University, Changchun, China
Department of Cadre Ward, First Hospital of Jilin University, Changchun, China
Department of Radiology, First Hospital of Jilin University, Changchun, China
Department of Neurobiology, Care Sciences and Society (NVS), Karolinska Institute, Stockholm, Sweden


  1. Pugliese S, Finocchi V, Borgia ML et al (2010) Intracranial hypotension and PRES: case report. J Headache Pain [Epub ahead of print]Google Scholar
  2. Carpentier P, Delamanche IS, Le Bert M, Blanchet G, Bouchaud C (1990) Seizure-related opening of the blood–brain barrier induced by soman: possible correlation with the acute neuropathology observed in poisoned rats. Neurotoxicology 11:493–508, 1:CAS:528:DyaK3MXns1GntQ%3D%3DPubMedGoogle Scholar
  3. Fugate JE, Claassen DO, Cloft HJ, Kallmes DF, Kozak OS, Rabinstein AA (2010) Posterior reversible encephalopathy syndrome: associated clinical and radiologic findings. Mayo Clin Proc 85:427–432, 10.4065/mcp.2009.0590PubMed CentralPubMedView ArticleGoogle Scholar


© Springer-Verlag 2010


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