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  2. Lichen planus - Wikipedia

    en.wikipedia.org/wiki/Lichen_planus

    Lichen planus may be categorized as affecting mucosal or cutaneous surfaces.. Cutaneous forms are those affecting the skin, scalp, and nails. [10] [11] [12]Mucosal forms are those affecting the lining of the gastrointestinal tract (mouth, pharynx, esophagus, stomach, anus), larynx, and other mucosal surfaces including the genitals, peritoneum, ears, nose, bladder and conjunctiva of the eyes.

  3. Lichen simplex chronicus - Wikipedia

    en.wikipedia.org/wiki/Lichen_simplex_chronicus

    Lichen simplex chronicus (LSC) is thick leathery skin with exaggerated skin markings caused by sudden itching and excessive rubbing and scratching. [1] It generally results in small bumps, patches, scratch marks and scale. [1] It typically affects the neck, scalp, upper eyelids, ears, palms, soles, ankles, wrists, genital areas and bottom. [1]

  4. List of skin conditions - Wikipedia

    en.wikipedia.org/wiki/List_of_skin_conditions

    Lichenoid eruptions are dermatoses related to the unique, common inflammatory disorder lichen planus, which affects the skin, mucous membranes, nails, and hair. [74] [75] [76] Annular lichen planus Lichen planus actinicus; Atrophic lichen planus; Bullous lichen planus (vesiculobullous lichen planus) Erosive lichen planus

  5. Histopathologic diagnosis of dermatitis - Wikipedia

    en.wikipedia.org/wiki/Histopathologic_diagnosis...

    Lichen planus Irregular epidermal hyperplasia with a jagged “sawtooth” appearance, compact hyperkeratosis or orthokeratosis, foci of wedge-shaped hypergranulosis, basilar vacuolar degeneration, slight spongiosis in the spinous layer, and squamatization. The dermal papillae between the elongated rete ridges are frequently dome shaped.

  6. List of ICD-9 codes 680–709: diseases of the skin and ...

    en.wikipedia.org/wiki/List_of_ICD-9_codes_680...

    697 Lichen. 697.0 Lichen planus; 697.1 Lichen nitidus; 697.8 Other lichen not elsewhere classified; 697.9 Lichen unspecified; 698 Pruritus and related conditions. 698.0 Pruritus ani; 698.1 Pruritus of genital organs; 698.2 Prurigo; 698.3 Lichenification and lichen simplex chronicus; 698.4 Dermatitis factitia; 698.9 Pruritus NOS

  7. Glossary of lichen terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_lichen_terms

    A lichen with a shrub-like or hairy thallus attached to the substrate at a single point. [202] fruticulose Also fruticulous . A smaller version of a fruticose lichen. [202] See related: microlichen. fulvous An yellow-brown or tawny color. [43] funiculus See umbilicate lichen. funoid Made of fibers or rope-like strands. [43] furcate Forked. [213 ...

  8. Koebner phenomenon - Wikipedia

    en.wikipedia.org/wiki/Koebner_phenomenon

    Toxicodendron dermatitis lesions are often linear from brushing up against the plant. Causes of the Koebner phenomenon that are secondary to scratching rather than an infective or chemical cause include vitiligo, psoriasis, lichen planus, lichen nitidus, pityriasis rubra pilaris, and keratosis follicularis (Darier disease). [citation needed]

  9. Pterygium unguis - Wikipedia

    en.wikipedia.org/wiki/Pterygium_unguis

    Lichen planus Pterygium unguis (or dorsal pterygium [ 1 ] : 660 ) forms as a result of scarring between the proximal nailfold and matrix, with the classic example being lichen planus , though it has been reported to occur as a result of sarcoidosis and Hansen's disease .