April 2021 in “Journal of Investigative Dermatology” Leontopodium alpinum extract may help reduce hair shedding by keeping hair in the growth phase longer.
Human placental extract effectively and safely improves melasma, ulcers, and alopecia areata.
25 citations
,
May 1995 in “Journal of the American Academy of Dermatology” Erythromelanosis follicularis faciei can also affect women, though it's rare.
23 citations
,
November 2011 in “Journal of the European Academy of Dermatology and Venereology” Hair loss is a rare but recognized symptom of pemphigus vulgaris, with patients usually regrowing hair after treatment.
8 citations
,
January 2014 in “Indian Dermatology Online Journal” Trichostasis spinulosa is a common but often unnoticed skin condition involving bundled vellus hairs, especially in people with darker skin or UV exposure.
134 citations
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September 2008 in “Lasers in surgery and medicine” Low fluence photoepilation temporarily removes hair by targeting the hair follicle's pigmented area without severe damage.
11 citations
,
November 1996 in “Pediatric dermatology” Trichostasis spinulosa can look like acne but usually affects adults, not children.
9 citations
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June 2017 in “Journal of Cutaneous Pathology” People with pemphigus vulgaris and pemphigus foliaceus often have smaller sebaceous glands on their scalp.
January 2002 in “Linchuang pifuke zazhi” A young woman had a rare scalp tumor usually found in older women.
September 2023 in “Clinical, cosmetic and investigational dermatology” A patient with a rare form of lupus improved after treatment for skin ulcers and hair loss on the face and scalp.
2 citations
,
January 2017 in “Indian dermatology online journal” A woman had a rare infection of both white piedra and head lice, which improved after 10 weeks of antifungal treatment.
29 citations
,
March 2016 in “Dermatologic therapy” Platelet-rich plasma may successfully treat lichen planopillaris, as shown by one patient's symptom regression.
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.
14 citations
,
May 1979 in “International Journal of Dermatology” Trichostasis spinulosa mainly affects the nose, with many tiny hairs in one follicle, possibly influenced by hormones and sunlight.
7 citations
,
October 2012 in “Anais Brasileiros de Dermatologia” A patient had both white piedra and head lice, showing their differences.
10 citations
,
September 1994 in “International Journal of Dermatology” Three Iranian men had reddish-brown facial pigmentation with no effective treatment.
2 citations
,
May 2022 in “International journal of trichology” Plica neuropathica is a tangled hair condition that may be caused by hair damage or psychiatric issues and is treated by cutting the hair and addressing mental health.
July 2022 in “Dermatology Reports” A rare scalp condition called Erosive pustular dermatosis is hard to diagnose and treat.
18 citations
,
May 2006 in “Journal of Cutaneous Medicine and Surgery” Linear lichen planopilaris can affect the trunk, not just the face.
9 citations
,
July 2019 in “Folia Morphologica” Brandt's hedgehog has thick skin on its back and many glands near its nostrils.
August 2018 in “Journal of The American Academy of Dermatology” A 16-year-old girl's skin rash was likely caused by an infection and improved with topical steroids.
July 2017 in “Journal of Young Pharmacists” Nothopanax scutellarium leaves can promote hair growth but may mildly irritate the skin.
April 2024 in “Biomedicine & pharmacotherapy” Pilose antler extract helps hair grow in mice with a type of hair loss by speeding up the growth phase.
August 2025 in “Frontiers in Pharmacology” Periplaneta americana extract helps hair regrowth by reducing inflammation and improving skin bacteria balance.
September 2021 in “CRC Press eBooks” Erosive pustular dermatosis of the scalp causes painful, scarring skin lesions on the scalp, mainly in elderly people with sun-damaged skin.
3 citations
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July 2018 in “Elsevier eBooks” Erosive pustular dermatosis of the scalp is a rare condition that causes scarring hair loss, mainly in older women, and requires ongoing treatment.
3 citations
,
August 2017 in “Clinical case reports” A rare skin condition causes red and dark patches on the face and limbs.
March 2025 in “Plastic & Reconstructive Surgery Global Open” Human Platelet Extract hair serum improves hair health and growth safely.
February 2026 in “International Journal of Homoeopathic Sciences” Plica Polonica is a rare hair disorder causing severe matting, managed by detangling or cutting, and prevented with regular hair care.
2 citations
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July 1968 in “Experimental Biology and Medicine” Cystaselenonine causes temporary hair loss in mice by interfering with hair growth.