8.3.2 Opioid-withdrawal headache

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

Diagnostic criteria:
A. Headache fulfilling criterion C
B. Opioid intake daily for >3 months, which has been interrupted
C. Evidence of causation demonstrated by both of the following:

    1. headache has developed within 24 hr after last opioid intake
    2. headache has resolved within 7 days after total opioid withdrawal

D. Not better accounted for by another ICHD-3 diagnosis.