8.3.2 Opioid-withdrawal headache

Description:

Headache developing within 24 hours after daily consumption of opioid(s) for more than 3 months, which has been interrupted. It resolves spontaneously within 7 days in the absence of further consumption.

Diagnostic criteria:

1. Headache fulfilling criterion C
2. Opioid intake daily for >3 months, which has been interrupted
3. Evidence of causation demonstrated by both of the following:
   1. headache has developed within 24 hours after last opioid intake
   2. headache has resolved within 7 days after total opioid withdrawal
4. Not better accounted for by another ICHD-3 diagnosis.