6 citations
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June 2024 in “Drug Testing and Analysis” Nails could be used to check long-term drug use, but more research is needed.
15 citations
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March 1996 in “PubMed” Anorexia nervosa may cause a hair defect called pili torti due to malnutrition and high vitamin A levels.
January 2020 in “Medpulse International Journal of Medicine” Nail and hair changes are common in severe chronic kidney disease and should be treated to improve patients' quality of life.
11 citations
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October 1980 in “Archives of Dermatology” Beau's lines and hair loss in a patient were linked to severe stress on the body.
December 2025 in “IP Indian Journal of Clinical and Experimental Dermatology” Hair shaft disorders often indicate genetic or systemic issues and are managed by minimizing damage.
28 citations
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June 1995 in “The Journal of Dermatology” The flaky skin mouse mutation is a natural model for studying human psoriasis.
2 citations
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June 2010 in “Medicina de Familia SEMERGEN” The girl's "dandruff" was actually harmless hair casts, not a hygiene issue.
17 citations
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January 2015 in “International Journal of Trichology” Frontal fibrosing alopecia may affect nails and could be a type of lichen planus, treatable with certain medications.
January 2025 in “International Journal of Dermatology Sciences” Nail changes in alopecia areata are common and may indicate severity and genetic risk.
5 citations
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March 1943 in “Archives of Dermatology and Syphilology” A rare case of severe scalp hair loss and nail issues in keratosis follicularis was observed.
4 citations
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October 2015 in “JAAD Case Reports” Surgical grafting may fix nail issues caused by valproic acid.
May 2018 in “Dermatologic Surgery” 22 citations
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October 2007 in “Journal of Investigative Dermatology” Stem cells in mouse nails are found in the nail matrix and may control nail growth.
September 2025 in “Cermin Dunia Kedokteran” Candida nail infections need lab tests for accurate diagnosis and treatment.
1 citations
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November 2011 in “Archives of Dermatology” A woman's hair loss was caused by her husband's testosterone gel and a diabetic man's nail disease led to bone infection, both treated successfully.
A rare genetic mutation causes severe immune issues, hair loss, and nail problems.
18 citations
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March 1974 in “Acta dermato-venereologica” Chronic kidney disease can cause skin and nail problems.
February 2009 in “Springer eBooks” Pregnancy can cause more body and scalp hair growth and make nails brittle, but these changes often revert after giving birth.
5 citations
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January 2022 in “Journal of Cosmetic Dermatology” COVID-19 can cause hair loss and nail changes in some patients.
6 citations
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March 2016 in “PLoS ONE” The patient's hair was thinner and had fewer lipids due to a genetic mutation.
June 2024 in “Annals of Medicine and Surgery” A 23-year-old Syrian woman has two rare hair disorders, and avoiding hair treatments plus using vitamins and minoxidil may help.
36 citations
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December 1991 in “Journal of Dermatological Science” Human nails contain both skin and hair keratins, each needing different extraction methods.
26 citations
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February 1991 in “PubMed” Trichotillomania can be identified by a "Friar Tuck sign" and nail-biting.
January 2021 in “Clinical case studies and reports” A man had nail and hair changes months after severe Covid-19, showing long-term effects.
30 citations
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May 1980 in “Journal of the American Academy of Dermatology” Alopecia areata can cause spotty white areas on nails.
4 citations
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December 2013 in “The Journal of Dermatology” A new mutation in the K6b gene caused a girl's late-appearing nail condition.
2 citations
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February 2021 in “PubMed” Koilonychia in alopecia areata can improve with oral corticosteroids.
September 2009 in “Medical and surgical dermatology/Medical & surgical dermatology”
January 2014 in “Pathology” The document concludes that understanding nail anatomy is key for diagnosing nail diseases, early signs of nail melanoma may allow for less aggressive treatment, and specific genetic mutations are important in thyroid cancer prognosis and treatment.
6 citations
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May 2024 in “Developmental Biology”