| urtica | <botany> A genus of plants including the common nettles. See Nettle. Origin: L, a nettle. Source: Websters Dictionary (01 Mar 1998) |
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| urticaceous | <botany> Of or pertaining to a natural order (Urticaceae) of plants, of which the nettle is the type. The order includes also the hop, the elm, the mulberry, the fig, and many other plants. Source: Websters Dictionary (01 Mar 1998) |
| urtical | Resembling nettles; said of several natural orders allied to urticaceous plants. Source: Websters Dictionary (01 Mar 1998) |
| urticant | Producing a wheal or other similar itching agent. Origin: L. Urtica, nettle; see urtica (05 Mar 2000) |
| urticaria | <dermatology> A transient condition of the skin, usually caused by an allergic reaction, characterised by pale or reddened irregular, elevated patches and severe itching, hives. (18 Nov 1997) |
| urticaria acuta | Urticaria accompanied by slight constitutional symptoms. Synonym: acute urticaria, urticaria acuta, urticaria febrilis. (05 Mar 2000) |
| urticaria bullosa | An eruption of wheals capped with subepidermal vesicles. Synonym: urticaria vesiculosa. (05 Mar 2000) |
| urticaria chronica | A form of urticaria in which the wheals recur frequently, or persist. Synonym: urticaria chronica. (05 Mar 2000) |
| urticaria conferta | A form of urticaria in which the wheals are aggregated in a group. (05 Mar 2000) |
| urticaria endemica | Urticaria epidemica, urticaria caused by the nettling hairs of certain caterpillars. (05 Mar 2000) |
| urticaria factitia | A form of urticaria in which whealing occurs in the site and in the configuration of application of stroking (pressure, friction) of the skin. Synonym: autographism, dermagraphy, dermatography, dermographia, dermographism, dermography, factitious urticaria, skin writing, urticaria factitia. Origin: dermato-+ G. Grapho, to write (05 Mar 2000) |
| urticaria febrilis | Urticaria accompanied by slight constitutional symptoms. Synonym: acute urticaria, urticaria acuta, urticaria febrilis. (05 Mar 2000) |
| urticaria haemorrhagica | Urticaria bullosa in which the serous exudate contains blood. (05 Mar 2000) |
| urticaria maculosa | A chronic form of urticaria with lesions of a red colour and little oedema. (05 Mar 2000) |
| urticaria medicamentosa | An urticarial form of drug eruption. (05 Mar 2000) |