BARRY N.J. WALTERS; SASSON S. GUBBAY, M.D.
To the editor: Ahlskog and O'Neill (1) proposed four criteria for the diagnosis of pseudotumor cerebri. We question their first criterion.
Although it is not unreasonable to require demonstration of raised intracranial pressure for the diagnosis of pseudotumor cerebri, pressure fluctuates in this condition and may not always exceed 200 mm H2O. Johnston and Paterson (2) monitored the intracranial pressure continuously in 20 patients with benign intracranial hypertension using an intraventricular catheter. The mean intracranial pressures in individual patients ranged from 1 to 35 mm Hg (13.6 to 476 mm H2O) over periods of 6 to 68 hours of continuous
WALTERS BN, GUBBAY SS. Pseudotumor Cerebri. Ann Intern Med. ;98:262. doi: 10.7326/0003-4819-98-2-262_1
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Published: Ann Intern Med. 1983;98(2):262.
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