WordNet

either of two parallels of latitude about 23.5 degrees to the north and south of the equator representing the points farthest north and south at which the sun can shine directly overhead and constituting the boundaries of the Torrid Zone or tropics
any of several eruptive skin diseases characterized by hard thick lesions grouped together and resembling lichens growing on rocks
any thallophytic plant of the division Lichenes; occur as crusty patches or bushy growths on tree trunks or rocks or bare ground etc.

PrepTutorEJDIC

〈C〉回帰線 / 《the tropics》熱帯地方 / 熱帯[地方]の(tropical)
地衣(ちい);地衣類(菌類と藻類との共生体)

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1. 後天性色素増加症 acquired hyperpigmentation disorders
2. 扁平苔癬 lichen planus
3. 顔面病変のダーモスコピー dermoscopy of facial lesions
4. 口唇炎 cheilitis
5. アミロイドーシスの皮膚症状 cutaneous manifestations of amyloidosis

English Journal

A case of actinic lichen planus.

MacFarlane AW.
Clinical and experimental dermatology.Clin Exp Dermatol.1989 Jan;14(1):65-8.
The condition known as actinic lichen planus is believed to be a particular variant of lichen planus which occurs on light-exposed areas. Synonyms include lichen planus tropicus, lichen planus subtropicus, lichen planus in subtropical countries, lichenoid melanodermatitis, and lichen planus atrophic
PMID 2805391

Ivermectin in equine lichen tropicus.

Raisinghani PM, Kumar D.
The Veterinary record.Vet Rec.1988 Nov 26;123(22):583.
PMID 3212911

Lichen planus actinicus.

Zanca A, Zanca A.
International journal of dermatology.Int J Dermatol.1978 Jul-Aug;17(6):506-8.
Two patients with lichen planus actinicus are reported. Lichen planus actinicus is more descriptive than lichen planus tropicus, since the condition appears in more temperate climate, i.e. Italy. The etiology of this condition is obscure, but light may act as a triggering mechanism.
PMID 681054

Japanese Journal

熱帯性扁平苔癬について

小澤明,松尾聿朗,新妻寛,鈴木弓,町田暁,大城戸宗男
Japanese Journal of Tropical Medicine and Hygiene 7(1), 35-42, 1979
… A 75-year-old woman was diagnosed as lichen planus tropicus on clinical and histological findings and photopatch test. … And we have also studied thirteen other patients diagnosed as lichen planus based on clinical and histological findings in our clinic. …
NAID 130003976027

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Lichen tropicus | definition of lichen tropicus by Medical dictionary

lichen sclero´sus (lichen sclero´sus et atro´phicus) a chronic atrophic skin disease marked by white papules with an erythematous halo and keratotic plugging. It sometimes affects the vulva (kraurosis vulvae) or penis (balanitis

Lichen tropicus | Article about lichen tropicus by The Free ...

Lichens usually reproduce by the breaking off of a segment that contains both components. Lichens can withstand great extremes of temperature and are found in arctic, antarctic, and tropical regions. They are often the pioneer forms of life—as in parts of Iceland and Greenland, where they are the predominant vegetation.

Lichen tropicus - definition of lichen tropicus by The Free ...

Define lichen tropicus. lichen tropicus synonyms, lichen tropicus pronunciation, lichen tropicus translation, English dictionary definition of lichen tropicus. n. 1. A composite organism made up of a fungus, usually an ascomycete