Approximately 10-25% of people had experienced urticaria at least once in his life. Acute urticaria is more common in young people, generally men more often than women. While chronic urticaria is more common in middle-aged women (60%). People with a history of atopy, it is more easily affected by urticaria. Survey of the National Ambulatory Medical Care USA, from 1990 - 1997 women found 69% of all patients who come for treatment of urticaria. The most frequent age distribution was 0-9 years and 30-40 years. Incidence of urticaria in the general population of 1-5%.
The mechanism of urticariaUrticaria happens when a person is exposed to something that could trigger, then a few cells in the body release histamine and other substances. This leads to leaking of fluid from small blood vessels under the skin. This liquid will form a small bump when gathered under the skin, commonly known as urticaria.
Causes of UrticariaBasic cause is atopy. Atopy is an allergic condition or disorder that are derived from the same family with the disease manifestations such as urticaria, recurrent skin inflammation, the incidence in a particular place in accordance with the typical signs of age (atopic dermatitis), asthma, frequent colds, nasal congestion and sneezing until there are usually Also another sign of dark eye circles, dry skin and face a little pale. From the research, it turns out nearly 80% of unknown cause. Uncertainty causes of urticaria caused by factors that affect very many and difficult to ascertain.
Suspected causes of urticaria are as follows:
- Drugs: antibiotics (penicillin, sulfa, tetracyclines), pain relievers, aspirin, hormonal drugs, oral contraceptives)
- Foods, such as shrimp, fish, egg whites, shellfish, nuts, chocolate, milk, tomatoes, strawberries, cheese, onion, watermelon, tartrazine (in drinks or candy orange or yellow), sodium benzoate which is widely used as a preservative and flavorings.
- Materials are often in contact with the body (liquid soap, hand and body lotion)
- Bites or stings of insects (mosquitoes, bees and other)
- Inhalants such as pollens, mold spores, dust, animal dander and aerosol
- Contact with animal fleas, textile dust, animal saliva, plants, fruit
- Physical factors such as cold, heat, sunlight, vibration, friction or pressure (scratching, tight clothing, water spray, belt)
- Viral, bacterial, fungal and parasitic
- Dirty environment (house dust)
- Psychic: emotional stress or anxiety
- Systemic disease (lymphoma, hyperthyroidism, lupus erythematosus, and malignancy)
- Hormonal disorders (pregnancy, menstruation)
Classification of Urticaria:
- Based on the length
- Based on the morphologic
- Based on the depth and breadth of urticaria
Symptoms of Urticaria:
- Rash (red spots) with protrusions (bumps) on the skin surface is demarcated with different sizes and was very itchy, burning and stabbing
- Arise suddenly, bleached or faded when the press and if the new bentolan scratching will occur.
- Bumps swell and spread, or join each other to form larger bumps
- Shape change, loss arising in a few minutes or hours
- Contained in any body part
- Can cause swelling of the eyelids (maybe one or both eyes), lips swollen, thickened ears.
- Sometimes accompanied by stomach pains and a sense of fever