| LSC | late systolic click; left side colon cancer; left subclavian; lichen simplex chronicus; liquid scint... |
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| ASTMH | American Society of Tropical Medicine and Hygiene |
| DTCH | Diploma in Tropical Child Health |
| DTH | delayed-type hypersensitivity; Diploma in Tropical Hygiene |
| DTM | dermatophyte test medium; Diploma in Tropical Medicine |
| tropical | 1. Of or pertaining to the tropics; characteristic of, or incident to, the tropics; being within the tropics; as, tropical climate; tropical latitudes; tropical heat; tropical diseases. 2. [From Trope] Rhetorically changed from its exact original sense; being of the nature of a trope; figurative; metaphorical. "The foundation of all parables is some analogy or similitude between the tropical or allusive part of the parable and the thing intended by it." (South) Tropic month. See Lunar month, under Month. Tropic year, the solar year; the period occupied by the sun in passing from one tropic or one equinox to the same again, having a mean length of 365 days, 5 hours, 48 minutes.0 seconds, which is 20 minutes.3 seconds shorter than the sidereal year, on account of the precession of the equinoxes. Origin: Cf. L. Tropicus of turning, Gr. See Tropic. Source: Websters Dictionary (01 Mar 1998) |
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| tropical abscess | <gastroenterology> An area of abscess formation (liquefaction necrosis) in the liver due to infection of the organ with amoebae. See: amoebiasis. (05 Feb 1998) |
| tropical acne | <dermatology> A severe type of acne of the entire trunk, shoulders, upper arms, buttocks, and thighs; occurs in hot, humid climates. (05 Mar 2000) |
| tropical anaemia | Various syndromes frequently observed in persons in tropical climates, usually resulting from nutritional deficiencies or hookworm or other parasitic diseases. (05 Mar 2000) |
| tropical boil | <dermatology> The lesion occurring in cutaneous leishmaniasis. (05 Mar 2000) |
| tropical bubo | A venereal infection usually caused by Chlamydia trachomatis, and characterised by a transient genital ulcer and inguinal adenopathy in the male; in the female, perirectal lymph nodes are involved and rectal stricture is a common occurrence. Synonym: climatic bubo, Favre-Durand-Nicholas disease, lymphogranuloma inguinale, Nicolas-Favre disease, sixth venereal disease, tropical bubo. (05 Mar 2000) |
| tropical canine pancytopenia | A fatal disease of dogs in Asia, Africa, and the U.S. Caused by Ehrlichia canis, transmitted by the tick Rhipicephalus sanguineus, and characterised by haemorrhage, pancytopenia, and emaciation. Synonym: tropical canine pancytopenia. (05 Mar 2000) |
| tropical climate | <geography> A climate which is typical of equatorial and tropical regions, i.e., one with continually high temperatures with considerable precipitation, at least during part of the year. (12 Dec 1998) |
| tropical diarrhoea | tropical sprue |
| tropical diseases | <microbiology> Infectious and parasitic diseases endemic in tropical and subtropical zones, including Chagas' disease, leishmaniasis, leprosy, malaria, onchocerciasis, schistosomiasis, sleeping sickness, yellow fever, and others; often water-or insect-borne. See: emerging viruses. (05 Mar 2000) |
| tropical eczema | <dermatology> Eczema occurring in plaques on extensors of the extremities; of common occurrence and unknown aetiology. (05 Mar 2000) |
| tropical eosinophilia | <chest medicine, infectious disease> Eosinophilia associated with cough and asthma, caused by occult filarial infection without evidence of microfilaraemia, occurring most frequently in India and Southeast Asia. (05 Mar 2000) |
| tropical mask | A bronze-coloured pigmentation, probably produced by hormone imbalance, occurring in gradually increasing areas on the face, neck, and chest in persons exposed continuously to the tropical sun; similar to chloasma of the temperate zone, but intensified because of strong sunlight. Synonym: tropical mask. (05 Mar 2000) |
| tropical measles | <infectious disease, virology> A disease of uncertain character, somewhat resembling rubella, occurring in southern China. (05 Mar 2000) |
| tropical medicine | <study> The branch of medicine concerned with diseases, mainly of parasitic origin, common in tropical and subtropical regions. (12 Dec 1998) |