Headache experienced in both upright and recumbent postures, caused by and occurring within 4 days of an intrathecal injection and remitting within 14 days.
- Any headache fulfilling criterion C
- An intrathecal injection has been given
- Evidence of causation demonstrated by at least two of the following:
- headache has developed within 4 days of the intrathecal injection1
- headache has significantly improved within 14 days after the intrathecal injection2
- signs of meningeal irritation
- Not better accounted for by another ICHD-3 diagnosis.
- Headache usually develops within 4 days after intrathecal injection, and is present in both upright and recumbent postures.
- When headache persists beyond 14 days, alternative diagnoses should be considered, such as 7.2.2 Cerebrospinal fluid fistula headache, meningitis or leptomeningeal disease.