Types of allergies

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Allergies are abnormal reactions of the body to substances that it normally considered harmless.

Allergens can be inhaled, swallowed or in contact with skin. Specific symptoms of allergies are runny nose, itchy eyes, watery eyes, sneezing, itchy skin, etc. Allergens that most commonly cause these problems are: pollen, mold, dust, foods, animal dander, insect bites, insect spores, viruses and bacteria.

The most common seasonal allergies are common, such as, for example, hay fever. Among the more serious manifestations of allergy are: dizziness, difficulty swallowing, nausea and constipation, diarrhea, rash, vertigo, vomiting and other health problems that can arise from the way the body treats the allergen.


1. Overview
2. Symptoms of allergies
3. Types of allergies
4. Symptoms of allergies vs. symptoms of cold
5. Allergy’s treatment

Symptoms of allergies

Allergy symptoms can be classified into mild, moderate or severe.

1. Mild symptoms of allergies include:

- rash
- localized itching
- congestion
- allergic reactions do not spread to other parts of the body

2. Moderate allergic reactions may include symptoms that spread to other parts of the body including:

- itching
- shortness of breath

3. Severe allergy symptoms most commonly involve the presence of anaphylaxis. Anaphylaxis is a dramatic and dangerous reaction of the immune system to specific allergens. Reactions and sudden changes of the immune system affect the nervous system, cardiovascular system and breathing mechanism. Anaphylaxis can cause low blood pressure and may cause swelling of the throat and tongue, which will interfere with breathing.

Anaphylaxis can be fatal if medical intervention isn’t fast, and if epinephrine isn’t injected to counteract the reaction. Fortunately, there are only a few allergens that tend to trigger a serious reaction. In addition, only a small number of people can manifest anaphylaxis.

Other allergic symptoms that can turn in a few minutes, severe symptoms are:

- itchy eyes or face
- inflammation which vary in severity, which can make breathing and swallowing difficult
- abdominal pain
- cramps
- vomiting
- diarrhea
- mental confusion or dizziness.

Types of allergies

1. Allergy to cigarette smoke – cigarette smoke contains a number of toxic chemicals and irritants. People who have allergies to cigarette smoke may be more sensitive than others to cigarette smoke. In addition, cigarette smoke can aggravate other types of allergies too.

Smoking harms not only smokers but also those around them. Research has shown that wives and children of smokers tend to experience more respiratory infections and asthma than those not exposed to cigarette smoke. In addition, cigarette smoke can increase the risk allergic complications such as sinusitis and bronchitis. Common manifestations of allergy to cigarette smoke are:

- watery eyes and burning sensations local
- nasal congestion
- cough
- hoarseness
- difficulty breathing or wheezing.

2. Allergy to cockroaches – these are some of the most common allergens meet in indoor. Certain proteins in saliva and feces of these insects can be found in house dust. Recent studies have analyzed this type of allergy and have found a strong association between the presence of cockroaches and amplify the severity of asthma symptoms in people who are sensitive to cockroaches.

Cockroaches are also common even in the cleanest homes in crowded urban areas. Proteins found in their saliva, as microorganisms found in their excrements are a potent allergen.

3. Allergy to dust mites – dust allergy is the allergy to microscopic organisms that live in dust found in homes and at work. Over 10% of people suffer from allergies to dust.

4. Food allergy – Food allergy is an abnormal response of the body to a trigger factor of food composition. These allergic reactions can cause serious illness and even death. If you have a food allergy is essential to discover which foods may cause allergy.

5. Allergy to pollen – This allergy occurs especially seasonal (spring, summer and autumn) and regionally. The pollen of grass or trees will be influenced by temperature, time of day and weather conditions. Although preventive measures can be taken with most allergies, this type of allergy is difficult to prevent and avoid, as there is no simple way to avoid pollen in the air.

In this case, is the most effective way to avoid it is the treatment before the pollen season and isolation indoor, keeping the house and car windows closed to minimize exposure to pollen. It is important not to live in an area where are present trees that are known to cause allergies, such as elm, pecan or walnut.

6. Hay allergy or hay fever – If you have runny nose, stuffy nose or itchy eyes, you may think you are chill. However, these events might be triggered by an allergy. Hay fever is a type of seasonal allergic rhinitis. When in contact with an allergen, the body reacts by producing chemicals that cause sneezing, runny nose, itchy eyes.

7. Allergy to house dust – This is not caused by dirt, but a combination of materials that can cause allergies such as mold spores, pollen and dust mites. Among the methods that can be used to blur events include: shaking linen and carpets several times a week while you are wearing a protective mask, and avoid keeping the inside dry flowers, wicker baskets, stuffed animals.

8. Latex allergy – latex allergy is triggered by a type of natural rubber, made from a milky fluid derived from rubber trees. Symptoms include rash, hives, flushing and itching.

People who work in health facilities have the highest risk of developing this type of allergy, most commonly because they use latex gloves. Allergic manifestations can be reduced with certain medications, but complete latex avoidance is the most effective method of treatment.

9. Allergy to mold – Molds are formed in wet places, where oxygen levels are low: damp basements, bathrooms, places where fresh food are stored and the dripping water trays of the refrigerator. When fungal spores are inhaled, people allergic to mold may experience symptoms such as allergic rhinitis.

Preventive measures include using a dehumidifier to keep humidity below 50%, periodic checking of the valves and pipe condition for leaks constantly and decomposed yard waste removal, roof gutters.

10. Allergy to animal hair or flaky skin – pet allergy is often mistakenly associated with allergies to animal fur. The researchers found that most allergens are proteins in animal saliva, which often stick their fur when animals lick.

Allergy can last at least two years when it triggers, and the manifestations don’t disappear earlier than six months from the contact with pets.

Allergic rhinitis is an inflammation accompanied by excessive secretions and itching in the nose and sinuses. Many people use terms of “seasonal allergies” or “hay fever” for allergic rhinitis. The condition is the result of inhaling dust (which contains proteins removed by various triggers), molds, pollen, wires or flaky skin from animals, etc.

Symptoms of allergic rhinitis include:

- rhinorrhea
- nasal congestion
- itching, redness and watery eyes
- sneezing
- sore throat
- itching of the skin.

Asthma is a chronic disorder involving episodes of inflammation of the airways, making breathing difficult. Airway inflammation and construction may be exacerbated by exposure to allergens such as pollen, animal hair and flaky skin, mold, dust mites, cockroaches.

This may be exacerbated by exercise, exposure to cold temperatures, when acid reflux occurs or when the patient is experiencing stress or strong emotions. Tobacco smoke and chemical irritants can cause airway narrowing. People with allergies of any kind should learn to recognize the symptoms and detect the triggers of asthma.

Manifestations of asthma include:

- shortness of breath, especially after exercise
- wheezing (whistling when you breathe)
- dry cough without phlegm or mucus
- chest pain or pressure, especially when the patient coughs or breathes deeply
- sleep disturbance because of breathlessness or wheezing.

Hives occur due to several types of allergic reactions. Some people have recurrent episodes of hives and they never know what allergen triggers them. Hives is a specific type of rash, itchy. The rash may take the form of bumps or be similar to mosquito bites.

This can be extended to the body or concentrated in one area. Histamine release determines hives development. Scratching can cause the growth of their pimples.

Contact dermatitis is a rash of red or form of rash resulting from skin contact with an allergen. Allergens include: ivy, oak, sumac, nickel, cobalt, latex etc. Contact dermatitis involves itching, redness and local inflammation.

The events occur in a day or two after exposure and may involve the presence of pustules filled with clear liquid. The condition isn’t the result of an instant response of the immune system, as is the case with hives. After exposure, immune system cells called T cells, require a day or two to focus on the exposed skin and produce chemicals that trigger the rash.

Gastroenteritis or food poisoning is another type of food reaction that is often confused with food allergies. This is caused by an organism or toxin present in contaminated foods, inadequately cooked or left too long at room temperature. This does not mean that the same food will have the same reaction the next time, when it is consumed.

The most common triggers are cow’s milk (in infants), eggs, wheat, peanuts, soybeans, nuts, fish and crustaceans. Symptoms of food allergy occur within minutes (one hour) to use and can be:

- tingling, swelling and itching of the lips, mouth or throat
- itching or skin rash (hives)
- nausea and vomiting
- diarrhea

Severe manifestations include difficulty breathing or wheezing, dizziness, fainting or anaphylaxis.

Symptoms of allergies vs. symptoms of cold

Symptom: fever
Airborne allergies: never
Cold: rare

Symptom: Headache
Airborne allergies: rare
Cold: rare

Symptom: general pain
Airborne allergies: never
Cold: mild

Symptoms: weakness, fatigue
Airborne allergies: sometimes
Cold: sometimes

Symptoms: extreme exhaustion
Airborne allergies: never
Cold: never

Symptom: stuffy nose, runny
Airborne allergies: normally
Cold: normal

Symptoms: sneezing
Airborne allergies: normally
Cold: normal

Symptom: sore throat
Airborne allergies: sometimes
Cold: normal

Symptom: Cough
Airborne allergies: sometimes
Cold: normal

Symptom: chest discomfort
Airborne allergies: rare
Cold: mild to moderate

Allergy’s treatment

If avoiding allergens is almost impossible or if this doesn’t contribute to the relief of symptoms, you may need additional treatment. Most people respond very well to treatment with antihistamines. They fight the histamine released during allergic reactions by blocking its action. Antihistamines frequently cause mouth dryness and sleepiness.

- Use quality air filters because they are more effective for capturing dust and allergens.
- Use dehumidifiers. Allergies can be worse in wet environments.
- Avoid allergens. This is not a viable option for most people. Moving in other geographical areas may expose a person to other allergens. Still, the indoor isolation for a long period of time during the pollen season will help prevent allergies.
- Homeopathic treatment, acupuncture and those herbal remedies for allergies are now being tested.



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