| urticaria febrilis | Urticaria accompanied by slight constitutional symptoms. Synonym: acute urticaria, urticaria acuta, urticaria febrilis. (05 Mar 2000) |
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| 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) |
| urticaria papulosa | A sensitivity reaction to insect bites, especially human and pet fleas, seen mostly in young children as wheals followed by papules on exposed areas. Synonym: lichen urticatus, prurigo infantilis, urticaria papulosa. (05 Mar 2000) |
| urticaria perstans | A form of chronic urticaria in which the wheals persist unchanged for long periods; includes urticarial vasculitis. (05 Mar 2000) |
| urticaria pigmentosa | The most common form of mastocytosis. It occurs primarily in children and is typically characterised by multiple persistent small, reddish-brown, hyperpigmented, pruritic macules and papules. They are located most commonly on the trunk, but seen also on the extremities, head, and neck. (12 Dec 1998) |
| urticaria subcutanea | Urticaria in which itching is present without the wheals. (05 Mar 2000) |
| urticaria tuberosa | A vascular reaction involving the deep dermis or subcutaneous or submucal tissues, representing localised oedema caused by dilatation and increased permeability of the capillaries and characterised by development of giant wheals. (18 Nov 1997) |
| urticaria vesiculosa | An eruption of wheals capped with subepidermal vesicles. Synonym: urticaria vesiculosa. (05 Mar 2000) |