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What is All of the following are causes of primary headache EXCEPT: and explain in detail?
Ans. (d) SinusitisRef: Harrison 18th edition,chapter 14Primary HeadacheSecondary HeadacheType %Type %Tension -Type 69Systemic infection 63Migraine 16Head injury 4Idiopathic stabbing 2Vascular disorders 1Extertional 1Subarachnoid hemorrhage <1Cluster 0.1Brain tumor 0.1