114 citations
,
April 2004 in “International Journal of Dermatology” Postinflammatory hyperpigmentation causes dark skin patches and needs personalized treatment.
34 citations
,
June 1992 in “Journal of Cutaneous Pathology” Harlequin ichthyosis involves abnormal skin cell structures and giant mitochondria, affecting skin and hair.
April 2019 in “Journal of Investigative Dermatology” The created skin model with melanoblasts improves the study of skin color and offers an alternative to animal testing.
14 citations
,
January 1998 in “Dermatology” Polythelia pilosa is a type of extra breast tissue with hair and should be classified as such.
13 citations
,
January 2001 in “Pediatric dermatology” A dark-haired Chinese girl had hair that looked banded under certain light but was normal under a microscope.
July 2019 in “Indian dermatology online journal” Alopecia areata can show unusual red-dotted vessels and dithranol treatment may mask typical patterns.
35 citations
,
November 2010 in “Journal of Cutaneous Pathology” Dilated follicular infundibula and increased catagen/telogen follicles are key indicators for diagnosing alopecia areata.
2 citations
,
November 2006 in “Pump Industry Analyst” Pilomatricomas don't follow the usual hair follicle cell differentiation process.
March 2026 in “Portuguese Journal of Dermatology and Venereology” Avoid hair dye after microneedling to prevent scalp pigmentation.
13 citations
,
July 2012 in “Pigment Cell & Melanoma Research” A mutation in the Adam10 gene causes freckle-like spots on Hairless mice.
27 citations
,
December 2005 in “Journal of Cutaneous Pathology” The malignant pilomatricoma showed strong epithelial keratin expression, suggesting it may not calcify.
1 citations
,
January 2021 in “Dermatology online journal” A unique case showed a rare combination of two types of lichen planus on the face.
March 2025 in “JDDG Journal der Deutschen Dermatologischen Gesellschaft” Facial hyperpigmentation improved with oral isotretinoin and ivermectin cream after Demodex mites were identified as the cause.
Hair turning darker can be a sign of skin cancer.
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.
Pseudopelade is likely an independent disease due to its distinct features.
2 citations
,
March 2023 in “JAAD case reports” Hair repigmentation can indicate malignancy and should be investigated.
October 2024 in “Indian Journal of Dermatology” Early biopsy is crucial for diagnosing rare skin sarcoidosis, improving treatment.
June 2023 in “International Journal of Dermatology” Lichen planus pigmentosus mainly affects middle-aged women with darker skin, is underreported, and is hard to treat.
3 citations
,
August 2017 in “Clinical case reports” A rare skin condition causes red and dark patches on the face and limbs.
June 2006 in “Experimental Dermatology” Understanding skin patterns can help us learn about skin diseases and their treatments.
29 citations
,
January 2013 in “The journal of investigative dermatology/Journal of investigative dermatology” P-cadherin is crucial for hair follicle pigmentation but not skin pigmentation.
November 2021 in “CRC Press eBooks” Hair color is determined by melanin and can be affected by genetic conditions like albinism.
December 2023 in “Clinical, cosmetic and investigational dermatology” The study found that white hair in vitiligo has specific patterns and structures, which vary with the stage of the disease and may be similar to another hair condition.
January 2022 in “Skin appendage disorders” Trichoscopy effectively visualizes scalp micropigmentation without invasive methods.
16 citations
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July 2013 in “The American Journal of Dermatopathology” Pigmented casts are common in several hair loss conditions and can help diagnose specific types of alopecia.
38 citations
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June 2005 in “Acta Biochimica Polonica” Splenic eumelanin in C57BL/6 mice is different from hair eumelanin.
9 citations
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January 2011 in “American Journal of Dermatopathology” Pilomatrixoma involves abnormal hair keratin production and cell death, causing debris and cysts.
6 citations
,
January 2018 in “International Journal of Dermatology” Repigmentation patterns in vitiligo depend on melanocyte source, lesion status, and therapy choice.
7 citations
,
September 2024 in “BMC Genomics” Two genes, ERBB4 and ROR1, may cause the unique pigmentation in Lanping black-boned sheep.