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Saturday, 27 April 2013

The 14 most common allergies

Allergies are the most common "nightmare" of spring. This is the medical condition in which the body react to harmless environmental substances, allergens. What are the most common allergies?

In particular, the allergy is type I hypersensitivity reaction, in which main actors are especially blood cells, basophils and mast cells and a specific type of antibody, immunoglobulin E. However, not all the same allergies. Let us see what are the most common, starting with the most relevant, in spring.

The trees and flowers cause allergies during flowering because they produce small pollen cells, which are light and dry and can easily be carried in the breeze of spring. The most common allergy-causing trees are oak, western red cedar, the sycamore, maple, elm, cypress, walnut, the hickory and poplar.

The trees release pollen around the same time and if you are allergic may feel congestion, itchy eyes, ears, nose and mouth.


The "seeds" of mold work similarly. The mold releasing seeds, who also transported by the wind. They are plentiful in the environment and usually causing worse allergy symptoms from spring to autumn.

The allergy of this type causes the typical symptoms of allergy such as sneezing, congestion, runny nose and watery eyes itchy.

    Allergic rhinitis

Allergic rhinitis is now considered chronic respiratory disease. Its impact worldwide ranges from 7% to 16% and was increasing during the last 30 years.

The most common manifestation is swelling and inflammation of the nasal passages, congestion, sneezing and watery eyes and itching caused by a variety of allergens.


Sinusitis is an inflammation of the paranasal sinuses, which may be due to allergy, infection or autoimmune diseases. Most cases are due to a viral infection and resolve within 10 days. At least half of all cases of chronic sinusitis not due to allergy.


This is an inflammation of the lungs and airways constriction of bronchial tubes caused almost the same allergens, with those of allergic rhinitis. Effects of asthma are wheezing, tightness in chest, shortness of breath and coughing.

    Allergy of bee sting

It is one of the most dangerous allergic reactions, especially for people who have a severe allergy to bee stings. It causes swelling and inflammation around the pinch, and in severe cases may be an anaphylactic reaction, which occurs in the whole body and may even cause death.

Symptoms include rashes, swelling of the airways, wheezing, difficulty in breathing and swallowing, increased heart rate and decreased blood pressure, causing dizziness.


A very common form of dermatitis and often lifelong condition for persons who are hypersensitive to a wide range of skin irritation is eczema. In symptoms include dry, scaly skin that appears red in areas where there is inflammation, the incessant itching and feeling burned.

    Allergic conjunctivitis

Known as "pink eye", allergic conjunctivitis is an inflammation of the conjunctiva, ie the interior of the eyelid tissue that holds the eyeball and eyelids fluids. It can be activated by contact with substances such as shampoo, cosmetics, dirt, smoke, pool chlorine or various allergens that exist in nature.

    Chemical Sensitivity

The chemical reaction can not be precisely allergy, but looks pretty. The chemical sensitivity is the condition in which the patient is able to tolerate environmental chemicals, such as pesticides, fumes and other air contaminants.

Symptoms may include trouble breathing, nausea, headache, fatigue, cognitive dysfunction, cardiac arrhythmia or even seizures.

    Food Allergies

Food allergy is often hereditary with symptoms such as rash, vomiting, diarrhea, coughing, wheezing, facial swelling and hives. The food intolerances, such as lactose and shellfish are the most common, but they are not "pure" allergies because they do not involve an allergic reaction.

Indeed allergy to seafood may be the most common "strange" allergy, as it relates to 2% of the world population. The contact with shellfish such as shrimp, lobster or crab, can cause swelling of the lips, face or neck, as well as dyspnea, malaise, diarrhea and nausea.

    Allergy fabrics

It is known that certain kinds of fabric is likely to cause irritation and allergic reactions. According to experts, the woolen fabric can cause an allergic reaction, a "disease" called "contact dermatitis".

It is a skin rash, which can sometimes show small bumps and provide the skin for several years. People who have sensitive skin or a history of eczema are at increased risk of irritation from these fabrics. Among these persons are those who are generally allergies.

    Allergy to the paint

Closeness is the allergy to dye clothes. The dye used in the fabrics, is a common cause of allergic skin rashes. Especially, blue and orange pigments in clothes and other items, are considered the most harmful.

Additionally, tires socks, underwear and bras because of rubber, can cause rashes in some people. The synthetic materials, such as nylon and Lycra is also suspected, when used in underwear. For this reason, experts recommend to always wash new clothes before I wear them.

    Allergy shoes

This is the allergy caused by skin contact with the shoe and lead to various forms of dermatitis. Usually, someone understands when after contact, no itching or skin begins to swell, often seen rashes, blisters or a burning sensation. The World Allergy Organization indeed indicate that this strange allergy suffers one in 500 people.

What happens with this allergy, is that your body reacts to a type of formaldehyde resins, called PTBP and is used in the manufacture of leather shoes.


Are also common allergic reactions individuals to specific drugs. Penicillin, some antiseizure medications and aspirin, can cause hives or other allergic symptoms, for which needs immediate medical attention.



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