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  1. Lichen planus - Symptoms and causes - Mayo Clinic

    Nov 20, 2024 · The cause of lichen planus is likely related to the immune system attacking cells of the skin or mucous membranes. It's not clear why this irregular immune response happens. …

  2. Lichen planus - Wikipedia

    Lichen planus (LP) is a chronic inflammatory and autoimmune disease that affects the skin, nails, hair, and mucous membranes. [1][2] It is not an actual lichen, but is named for its appearance. …

  3. Lichen Planus: What It Is, Causes, Types & Treatments

    May 2, 2022 · Lichen planus is a condition that causes skin inflammation. The resulting rash can affect the skin on your arms, legs, scalp, nails, genital area and the inside of your mouth. For …

  4. Lichen planus: Causes - American Academy of Dermatology

    It’s thought that lichen planus develops when a person’s immune system mistakes a part of their body as foreign. When this happens, the person’s immune system attacks healthy cells in their …

  5. Lichen planus: Symptoms, Types, and Treatment with Images — …

    What causes lichen planus? Lichen planus is a T-cell mediated autoimmune disorder in which inflammatory cells attack an unknown protein within the skin and basal keratinocytes.

  6. Lichen Planus - University of Rochester Medical Center

    Lichen planus is a common disease that causes inflammation (swelling and irritation) on your skin or inside your mouth. Lichen planus is associated with hepatitis C, reaction to metal fillings, an …

  7. Lichen Planus - Johns Hopkins Medicine

    Lichen planus is a common disease that causes inflammation (swelling and irritation) on your skin or inside your mouth. On your skin, lichen planus causes a rash that is usually itchy. Inside …

  8. Lichen Planus | Fact Sheets | Yale Medicine

    What causes lichen planus? Researchers don’t know exactly what causes lichen planus, but it is widely thought to be the result of an abnormal immune response in which the body’s immune …

  9. Lichen Planus - Skin Disorders - MSD Manual Consumer Version

    Lichen planus, a recurring itchy disorder, starts as a rash of small, separate, red or purple bumps that then combine and become rough, scaly patches. The cause is unknown but may be a …

  10. Lichen Planus - Dermatologic Disorders - Merck Manual …

    Sep 5, 2024 · Lichen planus (LP) is thought to be caused by a T cell–mediated autoimmune reaction against basal epithelial keratinocytes in people with genetic predisposition (1).