Seeing Bitot’s spots is pathognomic of vitamin A deficiency.
Check out the papers mentioned
Song P, Adeloye D, Li S, Zhao D, Ye X, Pan Q, Qiu Y, Zhang R, Rudan I; Global Health Epidemiology Research Group (GHERG). The prevalence of vitamin A deficiency and its public health significance in children in low- and middle-income countries: A systematic review and modelling analysis. J Glob Health. 2023 Aug 11;13:04084. Link
Dermnet page on Vitamin A Deficiency by Brian Wu
Bitot Spots: A Pathognomonic Sign of Vitamin A Deficiency Das, Souvik et al. The American Journal of Medicine, Volume 136, Issue 10, e195 – e196 Link
Management of Bitot Spots. Umesh Krishna, MD, Sumana J. Kamath, MD, and Madhurima K. Nayak, MD
Edited by Sharon Fekrat, MD, and Ingrid U. Scott, MD, MPH Dec 2016 EyeNet Magazine. Link
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