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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.
Grinspan syndrome is a syndrome characterized by presence of the triad: essential hypertension, diabetes mellitus, and oral lichen planus. [1] Oral lichen planus is thought to be a result of the drugs used for treatment of hypertension and diabetes mellitus but this is not confirmed. [citation needed]
Desquamative gingivitis is a descriptive clinical term, not a diagnosis. [1] Dermatologic conditions cause about 75% of cases of desquamative gingivitis, and over 95% of the dermatologic cases are accounted for by either oral lichen planus or cicatricial pemphigoid. [1]
A fruticose lichen may have flattened "branches", appearing similar to a foliose lichen, but the underside of a leaf-like structure on a fruticose lichen is the same color as the top side. The leaf-like lobes of a foliose lichen may branch, giving the appearance of a fruticose lichen, but the underside will be a different color from the top side.
Wickham striae or Wickham's striae are whitish lines visible in the papules of lichen planus and other dermatoses, typically in the oral mucosa. [1] The microscopic appearance shows hypergranulosis. They are named after Louis Frédéric Wickham. [2] [3]
A lichen with a shrub-like or hairy thallus attached to the substrate at a single point. [204] fruticulose Also fruticulous . A smaller version of a fruticose lichen. [204] 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. [215 ...
Some superficial fungal infections of the skin can appear similar to other skin conditions such as eczema and lichen planus. [7] Treatment is generally performed using antifungal medicines, usually in the form of a cream or by mouth or injection, depending on the specific infection and its extent. [15] Some require surgically cutting out ...
This is possible due to the action of lichen phenolics such as usnic acid derivatives. [34] From the 1950s the lichen product usnic acid was the object of most antitumour research. These studies revealed some in vitro antitumour activity by substances identified in two common lichens Peltigera leucophlebia and Collema flaccidum. [35]