Urticaria :: Non allergic urticaria – hives, urticarea, nettle rash
Mechanisms other than allergen-antibody interactions are known to cause histamine release from mast cells.
For instance, a diverse group of signaling substances called neuropeptides have been found to be involved in emotionally induced urticaria.
Urticaria :: Hives, urticarea, nettle rash – overview
Urticaria or hives is a relatively common form of allergic reaction that causes raised red skin welts.
Urticaria is also known as nettle rash or uredo. These welts can range in diameter from 5 mm (0.2 inches) or more, itch severely, and often have a pale border.
Urticaria is generally [...]
Urticaria :: Hives, urticarea, nettle rash – Types
Various types of urticaria, hives, urticarea, or nettle rash :
Acute urticaria usually show up a few minutes after contact with the allergen and can last a few hours to several weeks. Food allergic reactions typically fit in this category. Common causes of reaction include consumption of shell fish, [...]
Urticaria :: Hives, urticarea, nettle rash – Treatments
Oral antihistamines provide a good solution for acute urticaria.
The medication will reduce the itching and help the welts disappear. Antihistamines mainly reduce sensitivity.
Short term side effects include drowsiness, while long term side effects can lead to a less responsive immune system. In the case of chronic urticaria, a [...]
Urticaria :: Hives, urticarea, nettle rash – Misconception
Angioedema is a related condition where similar types of swelling occur in a lower layer of the skin, mouth or throat. It is not identical to urticaria. They may, however, occur together.
The rash derived from poison-ivy is commonly mistaken for urticaria. Poison-ivy is caused by urushiol toxin. This [...]
Urticaria :: Hives, urticarea, nettle rash – Alternative Treatments
Oatmeal baths and anti-pruritic lotions can also be used to relieve the itching.
Detox baths usually consist of aromatherapic remedies such as Epsom salt in combination with body oil and water at high temperatures for 20 minutes. The method essentially forces the skin to perspire and excrete any [...]
Urticaria :: Allergic urticaria – hives, urticarea, nettle rash
Histamine and other pro-inflammatory substances are released from mast cells in the skin and tissues in response to the binding of allergen-bound IgE antibodies to high affinity cell surface receptors.
Basophils and other inflammatory cells are also seen to release histamine and other mediators, and are thought to [...]
Urticaria :: Non allergic urticaria – hives, urticarea, nettle rash
Mechanisms other than allergen-antibody interactions are known to cause histamine release from mast cells.
For instance, a diverse group of signaling substances called neuropeptides have been found to be involved in emotionally induced urticaria.
Urticaria :: Hives, urticarea, nettle rash – overview
Urticaria or hives is a relatively common form of allergic reaction that causes raised red skin welts.
Urticaria is also known as nettle rash or uredo. These welts can range in diameter from 5 mm (0.2 inches) or more, itch severely, and often have a pale border.
Urticaria is generally [...]
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