115 citations
,
May 2016 in “Clinical Medicine & Research” TSH is usually the only test needed to check thyroid function in primary care.
February 2024 in “International Journal of Research in Dermatology” Thyroid tests may not be needed for all vitiligo and alopecia areata patients unless thyroid disease symptoms appear.
May 2022 in “Endocrine practice” High-dose biotin can cause false thyroid test results; stop taking biotin two days before testing to avoid errors.
1 citations
,
April 2021 in “Nepal journal of dermatology, venereology & leprology” Iron profile tests are recommended for women with hair loss, as haemoglobin levels alone are not reliable.
September 2025 in “Online Türk Sağlık Bilimleri Dergisi” Low zinc and folate levels are linked to hair loss in children.
13 citations
,
July 2018 in “General and comparative endocrinology” Thyroid hormones and androgens affect gene expression in frog reproductive organs differently between males and females.
April 2011 in “Medical Journal of Tabriz University of Medical Sciences and Health Services” Many patients with Alopecia Areata have underlying autoimmune disorders, especially thyroid issues.
August 2024 in “Journal of Cosmetic Dermatology” Telogen effluvium is linked to deficiencies in iron, vitamin B12, and thyroid function.
July 2019 in “Journal of The American Academy of Dermatology” Lab tests for female hair loss have unclear usefulness; consider based on symptoms.
1 citations
,
October 2020 in “PubMed” Hormone testing may not be very helpful in diagnosing female pattern hair loss.
February 2025 in “Revista Eletrônica Acervo Saúde” Thyroid tuberculosis can cause hypothyroidism and should be considered when diagnosing cervical masses.
March 2021 in “CRC Press eBooks” Physical exams are important in hair loss diagnosis, considering cosmetic history, systemic diseases, and classifying alopecia types.
July 2025 in “Journal of Dermatology for Physician Assistants” Specific tests may help diagnose alopecia, but their treatment impact is unclear.
December 2020 in “Journal of Drugs in Dermatology” The document concludes that more research is needed to confirm if blood tests for things like iron and vitamin D are helpful for hair loss from Telogen effluvium.
35 citations
,
October 2017 in “JAMA dermatology” Children with alopecia areata should only have thyroid screening if they have Down syndrome, a history of atopy, family history of thyroid disease, or signs of thyroid problems.
5 citations
,
May 2019 in “Cureus” Taking biotin supplements can cause incorrect thyroid test results, leading to wrong diagnoses.
April 2026 in “International Journal of Homoeopathic Sciences” Alopecia areata is linked to thyroid diseases, and thyroid testing may help affected patients.
29 citations
,
February 1987 in “General and comparative endocrinology” Thyroid and gonadal hormones control seasonal hair growth and molting in male European badgers.
19 citations
,
January 2016 in “Dermatology Research and Practice” The study concluded that hair loss in Indian women is not significantly linked to anemia or thyroid problems, but checking thyroid function could help those with ongoing hair loss.
11 citations
,
October 2011 in “Dermato-endocrinology” Many alopecia patients have undetected thyroid abnormalities that can be found through physical exams.
2 citations
,
December 2017 in “Journal of The American Academy of Dermatology” The article suggests that five common skin-related lab tests may be unnecessary and could cause extra cost and anxiety without improving patient care.
July 2024 in “International Journal of Chemical and Biological Sciences” Glypican-4 may help indicate insulin sensitivity and lipid issues in women with PCOS.
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 2021 in “British Small Animal Veterinary Association eBooks” If a dog's skin tests are normal but it has hair loss, consider other non-endocrine causes and choose tests based on the hair loss pattern.
2 citations
,
March 2001 in “Environmental Health Perspectives” Small hormonal imbalances can cause significant health problems, so more sensitive testing for hormone-disrupting chemicals is needed.
67 citations
,
November 2002 in “Journal of The American Academy of Dermatology” The document concludes that careful evaluation is key to diagnose and treat women with hair loss, with tests for thyroid, iron, and hormones as needed.
34 citations
,
July 2006 in “Clinics in dermatology” Endocrine diseases in dogs often cause skin problems, with hypothyroidism and hyperadrenocorticism being common and leading to hair loss and infections.
18 citations
,
October 1984 in “International Journal of Dermatology” Lithium therapy may cause temporary hair loss, with possible regrowth if treatment is stopped or continued.
9 citations
,
September 2020 in “Journal of cosmetic dermatology” A woman developed vitiligo from repeated eyebrow microblading.
8 citations
,
December 2013 in “Journal of Investigative Dermatology Symposium Proceedings” Hepatitis C treatment may trigger complete hair loss, especially in those with a history of patchy hair loss, but hair usually grows back within a year.