Table 4.

ICHD-3 criteria for headache attributed to IIH (18).

Headache attributed to IIH
(A) New headache, or a significant worsening of a pre-existing headache, fulfilling criterion C
(B) Both of the following: Idiopathic intracranial hypertension (IIH) has been diagnosed cerebrospinal fluid (CSF) pressure exceeds 250 mm CSF (or 280 mm CSF in obese children)
(C) Either or both of the following: Headache has developed or significantly worsened in temporal relation to IIH, or led to its discovery Headache is accompanied by either or both of following: pulsatile tinnitus papilloedema
(D) Not better accounted for by another ICHD-3 diagnosis