What are the explanations for Urticaria?

Acute Urticaria
The most likely reason for Acute Urticaria is an allergic retort due to exposure to pets, horses, latex, foods like shellfish, nuts, egg and dairy foods & sometimes insect stings.
Allergies to medication like antibiotics ( penicillin ), blood pressure tablets, codeine and aspirin containing pain killers can cause acute Hives.
Frequently viral infections like glandular fever and hepatitis B, or bacteria ( helicobacter, streptococci ), fungal and parasitic infections can trigger Urticaria.
Papular Hives is the correct term for irritating bumps or grouped urticarial abrasions seen especially in youngsters and which follow insect bites from insects.
Chronic Urticaria
The reason behind Chronic Hives is far more tough to identify. Food addatives like salicylate, sodium benzoate, sulphites, colourings and nitrites may have a bering.
We often end up diagnosing Chronic Urticaria as being Idiopathic ( no identifiable reason ). This condition ( which can endure for several years ) is thanks to the production of auto-antibodies which in turn attack Mast Cells in our skin and tissues causing a huge release of histamine.
Unfortunatly more than 1/2 of Chronic Urticaria cases are due to production of these auto-antibodies to the IgE and its receptor on Mast Cells found in the skin ; therefore there is a possible relationship to underlying autoimmune illnesses.
Stress is accepted to bring on Hives & stress reducing steps are really imperative in dealing with chronic .
Physical Hives
Physical Urticaria can be caused by physical elements like exposure to environmental heat, extreme cold, the sun, vibration or pressure on the skin ( often from tight clothing ). Urticarial lesions infrequently last around 60 minutes.
Exercise and sweating may set off a noticable itchy rash called Cholinergic Urticaria. Aquagenic Urticaria is the name given to a condition where the sufferer is allergic to water.

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