March 2014 in “Journal of The American Academy of Dermatology” Vitamin D deficiency is common in temporary hair loss, and stress is often a suspected cause.
May 2023 in “Journal of The American Academy of Dermatology” Most lab tests for patients with Telogen effluvium, a type of hair loss, show no or mild abnormalities; only a few specific tests are useful.
May 2026 in “Indian Dermatology Online Journal” Leflunomide can cause skin ulcers, and stopping it can lead to healing.
2 citations
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January 2018 Diffuse alopecia areata causes widespread hair thinning due to an autoimmune response.
6 citations
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February 2020 in “Journal of Cutaneous Pathology” Nevus psiloliparus lacks mature hair follicles but keeps other skin structures intact.
44 citations
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January 2017 in “Journal of Investigative Dermatology” Mutations in the KLHL24 gene cause skin blistering in epidermolysis bullosa simplex.
16 citations
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April 2017 in “ACM Transactions on Graphics” Light scatters differently from elliptical hair fibers than from circular ones, and a new model better predicts this behavior, especially for shiny highlights.
169 citations
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February 2018 in “Immunity” Inactive stem cells in hair follicles and muscles can avoid detection by the immune system.
32 citations
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June 2013 in “Journal of Investigative Dermatology” Mice without certain skin proteins had abnormal skin and hair development.
March 2026 in “Journal of Investigative Dermatology” Folliculin slows hair growth, and blocking it might help treat hair loss.