Urticaria

urticaria

What is urticaria (Weal)?

The name urticaria is derived from the common European stinging nettle Urtica dioica. Urticaria can be acute or chronic, spontaneous or inducible. A weal (or wheal) is a superficial skin-coloured or pale skin swelling, usually surrounded by erythema that lasts anything from a few minutes to 24 hours.

What does urticaria look like?

Urticaria presents with highly itchy raised skin reactions known as weals (also known as hives) that may be round or ring-shaped, and may join together. They come and go within hours. Weals can also appear as raised lines after scratching.

How does urticaria affect general health?

Although urticaria may be very distressing because of the itching and its appearance, it generally has no direct effect on general health. However, it can cause a high impact on quality of life, including mood, and lead to problems with work and relationships. Rarely, angio-oedema may affect the tongue or throat.

What is the most common form of urticaria?

The most common form of urticaria is called spontaneous urticaria. Spontaneous urticaria is usually divided into ‘acute’ and ‘chronic’ forms. In ‘acute’ urticaria, the episode lasts up to six weeks. Chronic or long-lasting urticaria lasts for six weeks or more.

What is the difference between urticaria and Weal?

Urticaria can be acute or chronic, spontaneous or inducible. A weal (or wheal) is a superficial skin-coloured or pale skin swelling, usually surrounded by erythema that lasts anything from a few minutes to 24 hours. Urticaria can co-exist with angioedema which is a deeper swelling within the skin or mucous membranes.

What are urticaria hives?

Urticaria is the medical term for hives. So, what are hives? Hives are areas of the skin that become raised and itchy. They can either become red or can stay the same color as your skin. Hives can stay as small, itchy bumps or turn into large, swollen welts.

How long do weals last in urticaria?

In chronic inducible urticaria, weals appear about 5 minutes after the stimulus and last a few minutes or up to one hour. Characteristically, weals are: The weals are more persistent in chronic spontaneous urticaria, but each individual lesion will resolve within 24 hours. They may occur at certain times of the day.

What is the treatment for urticaria?

Treatment of urticaria can be as simple as eliminating whatever it was that caused the hives to start in the first place. If the itching and discomfort caused by the hives is bothering the patient, he or she can be given an antihistamine. An antihistamine is a medication that blocks the histamine production in your body.

Physical urticarias have the following characteristics. Weals last about 15 minutes, nearly always less than one hour (with the exception of delayed pressure urticaria, which lasts hours to days) What are urticaria-like skin lesions?

What are the symptoms of idiopathic urticaria?

How does chronic urticaria affect the body and mind?

Chronic urticaria can have a considerable negative impact on a persons mood and quality of life. Living with itchy skin can be particularly upsetting. One study found that chronic urticaria can have the same negative impact as heart disease.

What are hives (urticaria)?

What are hives (urticaria)? 1 Causes. Hives are a rash that appears as an allergic reaction. ... 2 Treatment. Antihistamines treat acute hives, but antibiotics may be needed for chronic hives. ... 3 Symptoms. Swellings, known as wheals, appear as a rash on the skin. ... 4 Home remedies. ... 5 Hives and stress. ... 6 Types. ... 7 Diagnosis. ...

How long do urticaria symptoms last?

They can be mild or severe and last from a few minutes to a few days. Hives may be a sign of a severe allergic reaction called anaphylaxis that needs immediate treatment. Urticaria that lasts longer than 6 weeks may be a chronic condition that needs long-term treatment. What causes urticaria? Hives are caused by an immune system reaction.

What are the causes and risk factors of urticaria?

Causes and Risk Factors of Urticaria (Hives) 1 Allergic. Allergy is the primary cause of urticaria. 2 Physical. Physical urticaria is a subset of hives in which the skin rash is provoked by specific... 3 Stress. In addition to physical stimuli, stress is commonly associated with... 4 Exercise. Exercise-induced urticaria is a distinctive form...

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