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. 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.