Telogen effluvium is one of the most common forms of non-scarring alopecia for which patients present to a dermatologist. It is a challenging disorder to treat and study, primarily owing to its multifactorial etiology which includes both physiologic and non-physiologic factors. Nutritional deficiency has been purported to contribute to hair shedding, and a patient's clinical history usually aids in directing laboratory evaluation. Many prior studies have either supported or failed to find a correlation between telogen effluvium and deficiencies in vitamins and minerals, in particular, vitamin D, ferritin, vitamin B12, folate, and zinc. We performed a retrospective cross-sectional study of patients with telogen effluvium in the greater Pittsburgh, Pennsylvania area, and measured the rates of these deficiencies. Our results demonstrate that the prevalence of vitamin D, ferritin, and zinc deficiencies is non-trivial and therefore justifies including these laboratory studies in initial clinical evaluation.
J Drugs Dermatol. 2016;15(10):1235-1237.
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