Medical treatments or underlying conditions. While any of these exposures can cause hives they are incredibly rare and little is known about why hives.

Urticaria Hives Causes And Risk Factors

If there is possibility the hives may be caused by an underlying problem blood or skin tests may be conducted.

What underlying conditions cause hives. Sometimes a hidden illness may be an underlying cause. The most common autoimmune conditions seen with hives include thyroid disease rheumatoid arthritis and Type 1 diabetes. Exposure to heat cold or water can cause hives as well.

Hives from contact with water or aquagenic urticaria are more likely in women especially during and after puberty. Swelling in the eyes or mouth. Hives are the result of mast cells being activated by your immune system to release histamines and other chemicals into the affected area which in turn results in red itchy swollen skin.

Often at-home treatments are enough to treat both conditions. If signs indicate that this may be the cause medical testing can find or rule out these causes. Its also possible for a disease such as a thyroid condition rheumatoid arthritis or diabetes to cause hives.

2 Mast cells occur in parts of the body that are exposed to our surroundings - eg. Another problem with diagnosing hives is that the symptoms are relatively generic -- red itchy welts on your skin are a common symptom among many skin disorders. Angioedema swelling of tissue beneath the surface of the skin can be mistaken for or associated with hives.

Children often outgrow allergies that cause hives. People with this life-threatening condition should carry injectable epinephrine EpiPen to treat severe allergic reactions. Hives can be triggered by some food additives including artificial colors flavoring agents and preservatives according to research published in.

The following symptoms may indicate angioedema. Conditions that may cause itching are varied and include liver disease kidney failure iron deficiency anemia thyroid problems and even certain cancers in rare cases leukemia lymphoma. Its important to try to determine the underlying cause of your hives or rash as this can help you decide on the best treatment.

Studies have found a strong association between chronic hives and autoimmune diseases such as. Angioedema may also occur. Hives typically crop up when you have an allergic reaction to a substancelike pet dander pollen or latextriggering your body to release histamine and other chemicals into your blood.

In skin and mucous membranes. You can also experience hives if you have lupus vasculitis and liver diseases. If you have an autoimmune condition you usually have other symptoms in addition to hives.

In some cases it may relate to an underlying autoimmune disorder such as thyroid disease or lupus. This is similar to hives but it. In some cases chronic hives may be related to an underlying illness such as a thyroid disease or rarely cancer.

For some people angioedema can cause anaphylaxis severe swelling of the airways and lungs. In these cases itching will typically affect the whole body while the skin appears normal. Oftentimes no specific cause can be identified especially in the case of chronic hives.

Hives and angioedema also occasionally occur in response to blood transfusions and infections with bacteria or viruses such as hepatitis and HIV. It can be caused by allergic reactions medications or a hereditary deficiency of some enzymes. Women should also visit their doctors for a physical exam during which they will be asked for their medical history.

For most people hives dont cause serious problems. Viruses can also trigger hives. Hives can be caused from allergens as well as physical and environmental factors such as stress heat sunlight or water.