cause of hives
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What Could Be Causing Your Hives? There are many causes of hives including foods, drugs, infections, and diseases. Oddly enough, even though there are many potential causes, in the majority of cases of hives, the cause is unknown. Hives causes can be broken down into 3 broad groups: Idiopathic: This means we don't know the cause; it just happens.
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Hives Treatment CenterOver 150,000 patients helped since 2001 Hives are most commonly caused by  an allergic reaction in which your immune system releases histamine into the bloodstream to fight the allergen. In essence, your immune system thinks there is a foreign substance (called allergens) in your system, and tells the body to release histamine to fight it off.
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- Researchers have identified many - but not all - of the factors that can cause hives. These include food and other substances you take, such as medications. Some people develop hives just by touching certain items. Some illnesses also cause hives.
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Hives Often, the cause of chronic hives is not clear. In some cases, chronic hives are a sign of an underlying health problem, such as thyroid disease or lupus. You can try various treatments to relieve your symptoms.
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5 Skin Disorders You Might Mistake for Hives It's made more difficult when different conditions have similar symptoms. Hives, for example, come in two types -- acute and chronic -- and are usually caused by your body releasing histamine in reaction to an allergy. Histamine is an organic compound in your body responsible for triggering the inflammatory process.
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What Are Hives and Angioedema? Histamine sometimes makes blood plasma leak out of small blood vessels in the skin, causing hives or angioedema. Sometimes, doctors don’t know exactly why hives have formed. Types. Acute urticaria and/or angioedema are hives or swelling lasting less than 6 weeks. The most common causes are foods, medicines, latex, and infections. Insect bites or a disease may also be responsible. The most common foods that cause hives are nuts, chocolate, fish, tomatoes, eggs, fresh berries, soy, wheat, and milk. Fresh foods cause hives more often than cooked foods. Certain food additives and preservatives may also be to blame.
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Carboniferous The Carboniferous is a geologic period and system that spans 60 million years from the end of the Devonian Period 358.9 million years ago, to the beginning of the Permian Period, 298.9 Mya. The name Carboniferous means coal-bearing and derives from the Latin words carbō and ferō, and was coined by geologists William Conybeare and William Phillips in 1822. Based on a study of the British rock succession, it was the first of the modern 'system' names to be employed, and reflects the fact ...
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What You Should Know About Hives What Causes Hives. Hives result from dilation of capillaries allowing fluid to leak out into the surrounding tissue, the epidermis. They resolve when the body absorbs this fluid. The border of a hive is described as polycyclic, or made up of many circles, and changes as fluid leaks out and then is absorbed.
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urticaria Hives can be caused by a number of things. It can be a reaction to the piece of food you ate, the new medication you took, or irritants in the air you breathe, among other causes. Urticaria was named in the 18th century for its resemblance to the rash caused by nettle, a plant of the genus Urtica. That genus name reflects the Latin word for nettle and is also related to the Latin verb urere, meaning to burn.
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What are hives, or urticaria? Hives or urticaria are a type of rash consisting of itchy, swollen, red welts. The itching may be mild or severe. Foods, medications, infections, exercise, scratching, alcoholic beverages, emotional stress and many other factors may worsen hives.he most common cause of hives is infections. Foods such as eggs, nuts and shellfish are common causes of urticaria. Medications such as aspirin and antibiotics (especially penicillin and sulfa) also are common causes of hives. Infections causing hives include the common cold, and other viral infections.
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- Other causes of hives are: Infections, including colds and infections caused by some bacteria or fungi. Some illnesses, including a type of vasculitis, lupus, and thyroid disease.
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What Are Hives and Angioedema? 1 The most common causes are foods, medicines, latex or infections. 2  Insect bites and internal disease may also be responsible. 3  The most common foods that cause hives are nuts, chocolate, fish, tomatoes, eggs, fresh berries, soya, wheat and milk. 4  Fresh foods cause hives more often than cooked foods. Chronic urticaria: Hives or swelling lasting more than six weeks. 2  The cause of this type of hives is usually more difficult to identify than those causing acute urticaria. 3  The causes can be similar to those of acute urticaria but can also include autoimmunity, chronic infections, hormonal disorders and malignancy.
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Understanding The Hives • Pollen. • Cat dander. • Insect bites such as bee ans wasp stings. Other causes of the hives include: emotional stress, bacterial-viral-fungal infections, hepatitis B, parasitic worms, food additives, plants, cold temperatures, heat, sweating, and dermatographism (irritation from pressure or tight fitting clothes).
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- Causes. The welts that come with hives arise when certain cells release histamine and other chemicals into your bloodstream. Doctors often can't identify the reason for this skin reaction, or why it sometimes turns into a long-term problem (chronic hives). But the skin reaction may be triggered by: 1  Pain medications. 2  Insects or parasites. 3  Infection. 4  Scratching. 5  Heat or cold. 6  Stress. 7  Sunlight.
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Overview Hives and angioedema can be caused by: 1  Foods. 2  Many foods can trigger reactions in people with sensitivities. 3  Shellfish, fish, peanuts, tree nuts, eggs and milk are frequent offenders. 4  Medications.
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- 1 The most common foods that cause hives are nuts, chocolate, fish, tomatoes, eggs, fresh berries, soy, wheat, and milk. 2  Fresh foods cause hives more often than cooked foods. 3  Certain food additives and preservatives may also be to blame.
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- Hives may occur as a result of exercising. An allergic reaction to detergent may cause hives in adults. Allergies to nuts may cause hives in adults. Certain medications may cause hives in adults. Allergies to shellfish, like oysters, can cause hives.Hives.n allergic reaction to detergent may cause hives in adults. Allergies to nuts may cause hives in adults. Certain medications may cause hives in adults. Allergies to shellfish, like oysters, can cause hives.
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Hives and Your Skin A. A. A. Urticaria, also known as hives, is an outbreak of swollen, pale red bumps or plaques (wheals) on the skin that appear suddenly -- either as a result of the body's reaction to certain allergens, or for unknown reasons.Hives usually cause itching, but may also burn or sting.he most common causes are certain foods, medications, or infections. Insect bites and internal disease may also be responsible. The most common foods that cause hives are nuts, chocolate, fish, tomatoes, eggs, fresh berries, and milk. Fresh foods cause hives more often than cooked foods.
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- Histamine sometimes makes blood plasma leak out of small blood vessels in the skin, causing hives or angioedema. Sometimes, doctors don’t know exactly why hives have formed. Types. Acute urticaria and/or angioedema are hives or swelling lasting less than 6 weeks. The most common causes are foods, medicines, latex, and infections. Insect bites or a disease may also be responsible. The most common foods that cause hives are nuts, chocolate, fish, tomatoes, eggs, fresh
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What Are Hives and Angioedema? Acute urticaria and/or angioedema are hives or swelling lasting less than 6 weeks. The most common causes are foods, medicines, latex, and infections. Insect bites or a disease may also be responsible. The most common foods that cause hives are nuts, chocolate, fish, tomatoes, eggs, fresh berries, soy, wheat, and milk. Fresh foods cause hives more often than cooked foods. Certain food additives and preservatives may also be to blame.
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Hives Clusters of hives may appear as a reaction to an allergen such as food, medicine, or an insect bite or sting. Hives may also occur as a reaction to infection or emotional stress.
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- If the cause of hives can be identified, the best treatment is to avoid the trigger or eliminate it: 1  Foods: Don’t eat foods that have been identified to cause your symptoms. 2  Rubbing or scratching: Avoid harsh soaps.esearchers have identified many-but not all-of the factors that can cause hives. These include food and other substances you take, such as medications. Some people develop hives just by touching certain items. Some illnesses also cause hives.
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Hives The most common causes of hives are allergic reactions. These can be caused by any allergen you might be sensitive to, including: foods (such as nuts, milk, and eggs)
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- Other causes of hives are not related to allergies and these can include: 1  exposure to the cold (like diving into a cold pool) 2  exercise. 3  sun exposure. 4  nervousness or stress. 5  infections caused by viruses.
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Definition Hives are red and sometimes itchy bumps on your skin. An allergic reaction to a drug or food usually causes them. Allergic reactions cause your body to release chemicals that can make your skin swell up in hives. People who have other allergies are more likely to get hives than other people. Other causes include infections and stress. Hives are very common. They usually go away on their own, but if you have a serious case, you might need medicine or a shot. In rare cases, hives can cause a dangerous swelling in your airways, making it hard to breathe - which is a medical emergency.
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What Are the Common Causes of Hives? Other than stress, the causes of chronic hives are quite different when compared to the causes of acute hives. Allergies only cause about 5 to 10% of chronic hives cases. When allergies cause chronic hives, pet allergy is usually to blame. Pollen, mold or dust mite allergies only rarely cause chronic hives. Chronic infections, such as viral hepatitis, sinus infections, and urinary tract infections, can cause chronic hives. Some studies have shown that infection with Helicobacter pylori, a bacteria commonly connected with stomach ulcers, is also associated with chronic hives.