25 citations
,
March 2012 in “Photodermatology Photoimmunology & Photomedicine” Photodynamic therapy successfully treated a difficult scalp condition causing hair loss.
8 citations
,
November 2015 in “The American journal of dermatopathology/American journal of dermatopathology” Punctate follicular porokeratosis is a skin condition with specific features seen in hair follicles.
1 citations
,
April 2019 in “JAAD case reports” A woman with lymphoma had a rare skin rash on her scalp and forehead, which was hard to diagnose but responded well to treatment.
25 citations
,
January 1999 in “Journal of cutaneous laser therapy” Diode laser effectively treats pseudofolliculitis barbae.
77 citations
,
August 1986 in “Archives of Dermatology” Vitamin B12 deficiency can cause skin and hair color changes, which are reversible with treatment.
9 citations
,
December 2010 in “Journal of The European Academy of Dermatology and Venereology” Latanoprost therapy potentially caused a woman's white hair to darken again.
6 citations
,
April 2014 in “PubMed” A man got brown patches on his skin (melasma) after taking finasteride, a hair loss treatment.
44 citations
,
July 2013 in “Journal of the American Academy of Dermatology” Poliosis circumscripta is a patch of white hair caused by lack of melanin, linked to genetic and acquired conditions.
2 citations
,
January 2010 in “PubMed” Current treatments for postmenopausal frontal fibrosing alopecia stop hair loss but don't regrow hair.
1 citations
,
January 2014 in “International Journal of Trichology” A patient with a rare hair condition and skin disorder showed hair improvement after treatment.
13 citations
,
January 2009 in “The Open Dermatology Journal” Oral pigmentation can be a sign of Addison's disease.
January 2018 in “Acta dermato-venereologica”
8 citations
,
May 2012 in “Clinical and Experimental Dermatology” An 82-year-old woman's hair turned white suddenly, likely due to a rare form of alopecia that targets pigmented hair.
9 citations
,
July 2016 in “The Journal of Dermatology” An 82-year-old man's white hair regained color after taking etretinate for psoriasis.
January 2015 in “Indian Dermatology Online Journal” The patient's hair loss is most likely due to diffuse alopecia areata.
2 citations
,
April 2025 in “Pediatric Dermatology” Macular alopecia is a distinct, non-scarring hair loss pattern that mostly affects young Hispanic/Latinx females and often resolves on its own.
3 citations
,
June 2025 in “Stem Cell Research & Therapy” Hair follicle-derived melanocyte transplant could effectively treat vitiligo by restoring skin color.
12 citations
,
June 2010 in “Journal of dermatology” Some patients with severe alopecia areata developed skin darkening from their treatment, which may indicate a less effective response to the therapy.
January 2026 in “Figshare” Finasteride can cause melasma, especially in people with darker skin.
January 2022 in “Indian dermatology online journal” Pigmented papules on the ear can be a rare skin condition called cutaneous amyloidosis, treatable with topical tretinoin.
June 2023 in “Dermatology online journal” A person with thyroid problems had rare, swollen, bald spots on their scalp caused by a condition usually found on the shins.
5 citations
,
March 1943 in “Archives of Dermatology and Syphilology” A rare case of severe scalp hair loss and nail issues in keratosis follicularis was observed.
November 2012 in “Annales de Dermatologie et de Vénéréologie” Frontal fibrosing alopecia can occur in children, not just postmenopausal women.
8 citations
,
January 2018 in “European journal of dermatology/EJD. European journal of dermatology” The girl's regrown brown hair had less of certain pigments than her original black hair.
4 citations
,
August 2010 in “Journal of the American Academy of Dermatology” Cicatricial alopecia involves scarring hair loss and can be treated with various medications.
4 citations
,
March 2013 in “The American Journal of Cosmetic Surgery” Melanin absorbing light is necessary but not enough for effective hair removal by light treatment.
18 citations
,
April 1989 in “Archives of Dermatology” Iron deficiency can cause hair color changes, which can be reversed with iron supplements.
7 citations
,
February 2019 in “Anais Brasileiros de Dermatologia” June 2025 in “British Journal of Dermatology” Segmented hair color changes can indicate active alopecia areata.
19 citations
,
July 2004 in “Clinical and experimental dermatology” Acneiform follicular mucinosis can be controlled with systemic corticosteroids.