Diagnostic criteria for SIH from Schievink et al1
| Criteria |
|---|
| A) Orthostatic headache |
| B) The presence of at least 1 of the following: |
| 1) Low opening pressure (≤60 mm H2O) |
| 2) Sustained improvement of symptoms after epidural blood patching |
| 3) Demonstration of an active spinal CSF leak |
| 4) Cranial MRI changes of intracranial hypotension (eg, brain sagging or pachymeningeal enhancement) |
| C) No recent history of dural puncture |
| D) Not attributable to another disorder |