What Is The Hives and How Treat That ?


During an allergic reaction of the skin cells release a chemical called histamine. This substance causes the blood vessels to dilate and become more permeable, filtering of the liquid carrying the skin.

The rash is due to an excessive increase of fluid in the skin (which is called edema). In severe cases, this symptom can also be followed by swelling in other parts of the body.

If swelling appears around the eyes, lips, tongue, larynx or hands is called angioedema.

– The foods that are most frequently produced eggs, nuts, strawberries and seafood .
– Contact with pollen or spores .
– Medication: the most common are non-steroidal anti-inflammatory drugs, certain antibiotics and ACE-inhibitors .
– Insect bites .
– Infections that may be caused by viruses , parasites or bacteria .
– Contact with plants such as nettles .
– Contact with animals or creatures like jellyfish .
– Physical stimuli, such as feeling cold or heat, sunlight, water, sweat or pressure .
– Substances such as perfumes, (such as condoms , gloves …) dyes, nickel or tar

What are the symptoms of hives?
– It usually starts with a spot on the skin that produces pruritus (itching) .
– After a few minutes the weals stains become reddish blisters of different sizes .
– The rash usually lasts two to three hours and can disappear and reappear in another part of the body .

Acute urticaria
In this type of urticaria, allergic type if the attack begins one hour after exposure to allergens. Given this evolution is possible to discover the cause. Each time the individual is exposed to that particular allergen, the symptoms will be repeated.

Normally, in cases of acute urticaria is not necessary to contact a doctor. The patient is able to find the cause and overcome the crisis by avoiding the trigger. In more severe cases, it will be important to consult a general practitioner or dermatologist.

Children and adolescents are especially prone to repeated attacks of acute urticaria.

Chronic Urticaria
By definition, chronic cases are more difficult to treat and usually require a long-term treatment.With chronic hives rash can last several weeks and it is advisable to contact your dermatologist.

In 90% of cases you can not find the cause of symptomsThis type is called idiopathic urticaria.

In most of the remaining 10% of the substance causing the allergy can be identified as nickel or perfume.

In extremely rare cases, hives can be related to underlying medical illness (infections, cancers, etc..).

If a comprehensive review demonstrates that there is no apparent trigger that produces chronic urticaria, the case is not worrisome. Chronic urticaria can be treated and in half the cases the rash goes away by itself in a period of approximately six months. However, in some instances the disease may be resistant to treatment and persist for years.

How can you differentiate the types of hives?
It is classified according to the cause which produces it and the duration of symptoms.If wheals last longer than 6 weeks is considered chronic urticaria. If less than this time is called acute.

Hereditary angioneurotic edema is a condition that can cause hives and swelling around the eyes, mouth and hands.Requires treatment by a specialist.

How the doctor diagnosed?
Usually it is enough to tell the doctor when, where and how the symptoms started and what has been the evolution. The biopsy of skin, skin tests to detect allergens, a thorough examination and various blood tests can confirm the diagnosis.

Complications
– Insomnia or sleep disturbances due to itching and irritation .
– Angioedema (swelling of the mucous membranes of the larynx and bronchi) that may require immediate medical treatment .

Future Perspectives
– In severe cases, the rash usually disappears when the cause that prevents triggers .
– If treatment is necessary, there are several medications that are effective when forward and relieve symptoms .

New drugs have been developed recently and prospects for an effective treatment for hereditary angioedema are good.

What medications are available?
Antihistamines are the most common drugs used for the treatment of urticaria. Relieves itching, hives reduce an acute outbreak and make the rash disappears. May be given by pill or injection.Antihistamines that cause drowsiness can be helpful for people with sleeping difficulties.

In severe cases it is essential to strangers or go to the dermatologist.

The treatment of hereditary angioneurotic edema must be prescribed by a specialist. Corticosteroids are commonly used to treat this condition.

Dr. Flemming Andersen , a specialist in dermatology, Dr. John Pillinger , GP