flare

1. A gradual tapering or spreading outward. 2. A diffuse redness of the skin extending beyond the local reaction to the application of an irritant; it is due to dilation of the arterioles and capillaries; depends upon an axon reflex set up by the liberation of a histamine-like substance in skin when injured. SEE ALSO: triple response.

- aqueous f. Tyndall phenomenon observed in the fluid of the anterior chamber of the eye.

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Fluvastatin Angioplasty Restenosis [trial]

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flare 'fla(ə)r, 'fle(ə)r vi, flared; flar·ing to break out or intensify rapidly: become suddenly worse or more painful often used with up <your gallstones \flare up (W. A. Nolen)>

flare n

1) a sudden outburst or worsening of a disease <acute \flares in rheumatoid arthritis (Emergency Medicine)> see FLARE-UP

2) an area of skin flush resulting from and spreading out from a local center of vascular dilation and hyperemia <urticarial \flare>

3) the presence of floating particles in the fluid of the anterior chamber of the eye called also aqueous flare

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n.

1. reddening of the skin that spreads outwards from a focus of infection or irritation in the skin.

2. the red area surrounding an urticarial weal.

3. (aqueous flare) the visible passage of a beam of light through the aqueous humour, which is a sign of inflammation of the anterior segment of the eye. The light is scattered by proteins in the aqueous humour that have exuded from blood vessels (see exudation).

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(flār) 1. the red outermost zone of the wheal and flare reaction, a manifestation of immediate, as opposed to delayed, allergy or hypersensitivity. 2. a spreading flush or area of redness on the skin, spreading out around an infective lesion or extending beyond the main point of reaction to an irritant. 3. sudden exacerbation of a disease.