Table 2:

Total IIH Incidence Proportion In the United States From 1990 to 2024. Values represent new cases per 100,000 people in each time period.

Category	1990–1999	2000–2009	2010–2019	2020–2024
Age Groups:
Pediatric (0–14)	14	31	83	56
Teenager (15–19)	24	60	162	116
Adult (20–64)	16	33	122	127
Geriatric (65+)	67	27	33	29
Gender:
Female	22	47	153	148
Male	8	13	50	45
Race:
American Indian/Alaska Native	108	33	113	134
Asian	8	6	45	57
Black/African American	18	40	143	152
Native Hawaiian/Pacific Islander	41	34	92	105
White	15	29	103	93
Ethnicity:
Hispanic or Latino	10	27	100	114
Not Hispanic or Latino	15	31	111	106