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    Glossary Hair Casts

    tiny, cylindrical structures encircling hair shafts, often mistaken for lice eggs

    Hair casts, also known as pseudonits, are tiny, cylindrical, white or yellowish structures that encircle the hair shaft. They can be mistaken for lice eggs (nits) but are actually composed of keratin and other debris. Hair casts can be easily moved along the hair shaft and are often associated with conditions like seborrheic dermatitis or psoriasis.

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    Research 10 of 1000+

    1. Hair casts: Classification, staining characteristics, and differential diagnosis Journal of the American Academy of Dermatology · 1983 · 27 citations
    2. Hair Casts: A Clinical and Electron Microscopic Study Pediatric Dermatology · 1990 · 24 citations
    3. Is Propionibacterium acnes associated with hair casts and alopecia? International Journal of Trichology · 2012 · 19 citations
    4. Hair Casts and Cutaneous Spicules in Multiple Myeloma Archives of dermatology · 2006 · 19 citations
    5. Hair casts or pseudonits International journal of trichology · 2011 · 18 citations
    6. Acantholytic hair casts: A dermoscopic sign of pemphigus vulgaris of the scalp International Journal of Trichology · 2012 · 15 citations
    7. Hair Casts Archives of dermatology · 1985 · 15 citations
    8. Hair Casts Dermatology · 1980 · 9 citations
    9. Hair casts. A clinical and morphologic study Archives of dermatology · 1985 · 6 citations
    10. Hair casts (pseudonits) CMAJ. Canadian Medical Association journal · 2012 · 5 citations
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    Community 10 of 1000+

    1. This seems to be working for me (New Nordic - Hair Gro, Shea Moisture Jamaican Black Castor Oil Leave in Conditioner, and NAC) Reddit · 5 Feb 2022
    2. How does castor oil improve hair growth? Reddit · 24 Jun 2020
    3. What do people think about using a castor oil pack on thinning hair? It is ant-inflammatory has a lot of vitamins and fatty acids.. Reddit · 11 Sept 2018
    4. Can I grow my vellus hair on my left temple longer? I've tried wild growth, castor oil, hsn vitamins, in currently on spiro Reddit · 18 Nov 2016
    5. 23M Seeking Hair Loss Treatments Safe for Cats and Dogs Community · 15 Mar 2026
    6. I can’t believe the cure for hair loss costs like $35 A YEAR Reddit · 2 Apr 2026
    7. New Rosemary Oil, Castor Oil, Argan Oil, Jojoba Oil Combination Product for Hair Growth Reddit · 29 May 2024
    8. Castor oil: Dozens of photo reviews on Amazon! Why there is no studies about Castor Oil for hair loss? Reddit · 29 Oct 2021
    9. How I Cut Hair Loss Treatment Costs by Sourcing from India — Where Do You Guys Buy From? (Indian Origin, US Resident) Reddit · 23 Jun 2025
    10. Why do we have head hair in first place if we evolved to start losing it in some cases as soon as puberty hits Reddit · 3 Oct 2025
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    Learn 10 of 61

    1. Castor oil Thick plant oil used in hair care
    2. Alopecia Areata autoimmune disorder causing patchy hair loss
    3. Adenosine Molecule the body uses for energy, used as a cosmetic hair-lotion ingredient
    4. Biotin B vitamin, often sold as a hair supplement
    5. Minoxidil Vasodilator used on the scalp and, at low doses, as a tablet
    6. Vitamin D Vitamin made in the skin from sunlight, also taken as a supplement
    7. Lavender Plant essential oil used in scalp products
    8. Cyproterone a synthetic anti-androgen and weak progestogen that inhibits DHT binding to androgen receptor
    9. Mesotherapy Injections of drug or vitamin mixtures into the scalp
    10. Neem Oil Oil from the neem tree, used in traditional remedies
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