This image displays circles, arcs, and snake-like curves typical of urticaria (hives). Urticaria (hives) can have red and pink slightly elevated lesions with rings, arcs, and scallop-edged shapes. This image displays extensive urticaria (hives). Urticaria (hives) can have pink lesions with gradual or sharp edges. Urticaria (hives) is a sign of an allergic reaction, often caused by a medication or food allergy. This image displays broad areas of redness typical of urticaria (hives). Urticaria (hives) can have pink, ring-like shapes. This image displays urticaria (hives) affecting the neck, face, and shoulders. Urticaria (hives) often causes ring-like and curving line-like shapes. Urticaria (hives) can appear at any age, including in newborns. This image displays urticaria (hives), which can produce bizarre shapes. Urticaria (hives) can be extensive, forming large areas of redness.
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Hives (Urticaria)  A parent's guide for infants and babies

Picture of Hives (Urticaria): This image displays circles, arcs, and snake-like curves typical of urticaria (hives). Divider line
This image displays circles, arcs, and snake-like curves typical of urticaria (hives).
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Signs and Symptoms
The most common locations for hives include:
  • Trunk
  • Upper arms or upper legs
However, hives can affect any skin surface.

Individual lesions of hives appear as well-defined, pink-to-red swellings ranging in size from 2 mm to over 30 cm. Some lesions may develop a lighter center. Hives usually appear in groups or batches.

Individual lesions of hives disappear within 24 hours, though a single episode may last much longer.

Dermographism is a type of hives that appears within a few minutes of scratching the skin. The rash usually appears in a straight line (linear) pattern.

Swelling of the eyes, mouth, hands, feet, or genitals can sometimes occur with hives. This swelling, called angioedema, usually goes away within 24 hours.

Usually itchy, hives can also burn or sting.
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Last Modified: 22 Dec 2008
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