How many adult people have a HA disorder?
50%
Primary vs Secondary HAs
Migraine, Cluster, Tension - - infection, vascular…
Infrequent episodic tension-type HA
< 12 days/year, episodes can last from 30 min - 7 days. Bilateral pressing or tightening (non-pulsating), uneffected by exertion. Must have photo or phonophobia without N/V.
Frequent episodic tension-type HA
10 episodes 1-15 days per month x 3 months with tension criteria.