Posts Tagged ‘allergic’
Urticaria
Rash (also known as urticaria) is presented as an elevation, area red or itchy rash that appears on the skin. Urticaria happens when there is a trigger, normally an allergen (which causes an allergic reaction) and causes the body to release histamine in our body. Histamine causes tiny blood vessels known as capillaries leak fluid, fluid accumulates in the skin and causes a rash.
Hives can be caused by many things, including:
Allergic reaction, for example, to certain foods or bee or wasp stings.
The skin comes into contact with something irritating, such as latex, chemicals, or nettles.
Drugs, usually anti-inflammatory drugs (NSAIDs), used to treat pain and fever, and ACE inhibitors, used to treat high blood pressure.
Physical triggers, such as skin pressure, low temperature, sunlight and water.
However, in about 50% of cases, does not identify any cause.
Urticaria is a common disease that affects one in six people at some point in their lives. It is more likely to affect more children and women.
The rash usually disappears after a few days, but some cases may last longer. It is not contagious.
Hives should not continue for more than six weeks is called acute urticaria.