Urticaria
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Urticaria
Urticaria or hives means itching with rash. It is a kind of skin rash notable for pale red, raised, itchy bumps. Hives is frequently caused by allergic reactions; however, there are many non-allergic causes.
Most cases of hives lasting less than six weeks (acute urticaria) are the result of an allergic trigger. C
Chronic urticaria (hives lasting longer than six weeks) is rarely due to an allergy. The majority of patients with chronic hives have an unknown (idiopathic) cause.
Cause
- Cholinergic: Reaction to body heat, such as when exercising or after a hot shower.
- Cold (Chronic cold urticaria): Reaction to cold, such as ice, cold air or water – worse with sudden change in temperature.
- Delayed Pressure: Reaction to standing for long periods, bra-straps, elastic bands on undergarments, belts.
- Dermatographic: Reaction when skin is scratched (very common)
- Heat: Reaction to hot food or objects.
- Solar: Reaction to direct sunlight.
- Food allergies.
- Drug allergies.
SYMPTOMS
- Itching.
- Swelling.
- Discomfort.
- Redness.
- Irritableness.
- Rashes.