Dermatology - diseases of the skin

Allergic skin reaction (redness and hives)


Allergic skin reaction - redness and hives

Allergic reaction of our body to any irritant (allergen) can manifest itself in different ways. Quite often, the Allergy manifests itself in the form of blisters, swelling or severe itching — these effects are known skin allergies. The most common skin diseases of allergic nature, atopic dermatitis, urticaria, angioedema, and eczema.

Types of Allergy on the skin

The allergen from the environment can enter the human body three natural ways:

  • food and drink — food Allergy.
  • When the direct impact on the skin — contact allergies (e.g., allergic to animal hair or washing powder).
  • In the process of respiration — respiratory or respiratory Allergy.

In cold weather or when swimming in cold water may develop the so-called cold urticaria.

However, clear and the weather is pleasant not all. Sunlight can cause the so-called photodermatitis(sun Allergy). The reason for the emergence of photodermatitis can be like sunlight, and, for example, a visit to the Solarium.

Allergens can come from outside (exogenous allergens), but also be formed in the body (endogenous allergens of origin).

The most frequent allergies in the skin manifested in the form of urticaria – allergo-toxic disease developing as a result of exposure to allergens coming from outside or formed in the body. Urticaria can occur by eating certain foods (eggs, seafood, meats, etc.), medicines, pollen, and also when exposed to extreme cold or sunlight, etc. Contributing factors are the neuro-endocrine disorders, diseases of the stomach and intestines, chronic infections, etc.

Causes and symptoms of allergies on the skin

Causes and symptoms of allergies on the skinThe term “urticaria” indicate an allergic reaction that appears as itchy blisters on the skin. These blisters very similar to those that appear when the nettle sting. Hence the name of this form of Allergy.

Urticaria is acute or chronic. For acute urticaria is characterized by the sudden appearance of abundant lesions on the skin, accompanied by severe itching. Blisters appear immediately after exposure to the allergen, and after 2-3hours lost. This often raises the body temperature, there is a fever, nausea, abdominal pain, vomiting. These symptoms usually continue for several days.

If rash urticaria regularly (paroxysmal) appear within 3 months or more, it is called chronic. It is characterized by less abundant than in the acute form, rash. Runs for a long time. If the cause of hives cannot be established, we are talking about idiopathic urticaria.

Allergic reaction, manifested in the form of swelling of the skin and mucous membranes, is called the angioedema,or giant urticaria. This can affect the lips, cheeks, eyelids, mouth or genitals. Swelling is accompanied by pain, burning, sometimes with itching.

The most dangerous angioedema in the throat – choking occurs that is similar to an asthma attack. However, unlike asthma, first there is hoarseness, barking cough, and then shortness of breath with noisy breathing. The complexion becomes cyanotic hue, then sharply turns pale. This condition requires emergency medical care.

Patches of redness, itching, dryness and peeling of the skin, occurring in a child, as a rule, suggest the occurrence of atopic dermatitis. The danger of this disease is that it can develop into respiratory allergies, particularly in bronchial asthma. In adulthood atopic dermatitis can be transformed into atopic dermatitis and eczema, pollinosis (hay fever), allergic asthma, etc.

Diagnosis and treatment of skin allergies

It should be remembered that these skin manifestations can be caused by allergic reaction of the body. The cause of the rash can also become infectious or systemic (autoimmune) diseases. Therefore, it is important to consult a doctor or dermatologist. You may also want to consult a doctor or allergist.

As with any other allergic reaction, for effective treatment you must first install the allergen, i.e. the factor causing this reaction. Therefore, it is necessary to conduct Allergy tests, elimination tests, cold and heat tests. To obtain a more complete picture of the disease can be conduct a comprehensive allergological and immunological tests.

Blood purification in the treatment of severe allergies plasmapheresis is used, for the purpose of General improvement of an organism may be prescribed a course of physiotherapy. The allergist will help you find the individual hypoallergenic diet.