What is clear is that whenever an allergic reaction occurs because you have previously existed, at some point, exposure to one of the many allergens that exist. Once it has started reaction allergic, the immune system very sensitive to certain substances, wrongly believed that the body is being attacked by them, when in reality, harmless substances are not harmful at all. However, in this alert, the immune system begins to release eosinophils and IgE, as well as other types of cells, called antibodies, to address the alleged invasion, usually infectious viruses and bacteria, which believes it is occurring at the time. All this translates into our external body inflammation levels more or less weight and discomfort of some magnitude.

Reactions in general are usually not too important, although dependent on many factors in our environment. These irritations are often hives, swelling, rashes and itching, but sometimes can also create some danger, especially in cases where there are breathing problems or blood pressure falls.

Experts generally agree that the best way to treat allergic reactions is prevention, that is, try to stay away from allergens to know. In this way, able to avoid the unpleasant symptoms and irritations that cause allergies each year in much of the population.

What is eczema or dermatitis?

It is a term used for various types of skin inflammation that manifests itself in many forms including:

• Lesions such as pimples and rashes on the skin
• Flushed
• Itch

This condition begins in an area of the body and then spreads.

Within dermatitis or eczema include all lesions that cause itching and redness. If condition worsens may have desquamation and secretions.

Types of eczema or dermatitis

There are several types including:

A typical Eczema
This is an allergy and is believed to appear due to hereditary factors in families with asthma and is characterized by what is very itchy skin.

Contact dermatitis
Allergy is produced in response to some allergens (poison ivy, detergents, metal, cosmetics, sun exposure, etc.).. This type of eczema is curable by avoiding the substance that causes it.

Changes in temperature
The skin becomes dry in cold weather and reacts with swelling and itching.

Seborrheic Dermatitis
It is associated with dandruff. Appears in oily areas of the face and scalp.

Causes of dermatitis or eczema
There are many causes including allergies or food contact, frayed nerves, use of some medications and presence of certain diseases.