A study published by Sy et al in JAMA Dermatology found that in the United States, the highest standardized prevalence for alopecia areata, alopecia totalis, and alopecia universalis among racial subgroups was identified in Asian patients (414 per 100,000), followed by patients who reported another race (other than Asian, Black, Hispanic/Latino, or White) or multiple races, then Black patients, then Hispanic/Latino patients—with White patients having the lowest standardized prevalence among the subgroups. In addition, there was a prevalence of alopecia in women 1.3 times the prevalence found in men. Cases of alopecia totalis and alopecia universalis made up 9% of patients diagnosed with alopecia areata in the United States. Lastly, the prevalence of alopecia was highest among patients aged 30 to 39 years and 40 to 49 years.
August 15, 2023