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Posts Tagged ‘Types of allergy’

Allergy, rather than a disease, is determined as the body’s hypersensitivity to a substance or item that when touched, ingested or smell triggers certain characteristic symptoms.

The word allergy comes from the Greek allergies?, And this in turn all voices, another and ergs, work, giving the meaning of “strange reaction,” the allergy is caused by certain elements called allergens and the symptoms produced are called allergic reactions.

When faced with a body allergic to the allergenic substance, and is constant exposure to it, the immune system generates an antibody response by releasing substances such as histamine, which produce symptoms in the subject themselves of an allergic reaction.
Types of allergy
Scientific classification

They have failed to identify and describe four types of hypersensitivity reactions or allergies. The four basic types are based on the classification of Coombs and Gell, 1963 are: Read the rest of this entry »

Types of allergy, according to the source of the allergen.

• Food allergy
• Allergy to pollen (hay fever, archaically “hay fever”)
• Allergy to dust mites
• Allergy to the bites of certain insects (eg bees)
• Allergies to animals

Allergy to metals

The most common allergy that can be cited among such is allergy to nickel, which is present in virtually all alloys of non-noble metals and sometimes in some low-gold alloys.

Nickel allergy is mediated by a type I hypersensitivity mechanism 4 with inflammation caused by direct mediator release by lymphocytes. The most common symptoms are the production of eczema in the area of contact with metals (jewelry, metal closures underwear, etc.)

The best defense is avoiding contact with these metals, and once appeared, with corticosteroids (steroids) applied locally in the short term. Although allergy symptoms go away and look forward, the nature of awareness is chronic, with periods of greater or less tolerance.