What are the causes of allergy?

What are the causes of allergy?

Causes

• Airborne allergens, such as pollen, animal dander, dust mites and mold.
• Certain foods, particularly peanuts, tree nuts, wheat, soy, fish, shellfish, eggs and milk.
• Insect stings, such as from a bee or wasp.
• Medications, particularly penicillin or penicillin-based antibiotics.

What allergy means?

The definition of allergy Allergy occurs when a person reacts to substances in the environment that are harmless to most people. These substances are known as allergens and are found in dust mites, pets, pollen, insects, ticks, moulds, foods and some medications.

What are allergies examples?

The allergic reaction is misguided in that these foreign substances are usually harmless. The substances that trigger allergy are called allergen. Examples include pollens, dust mite, molds, danders, and certain foods. People prone to allergies are said to be allergic or atopic.

How do I make my allergies go away?

Try an over-the-counter remedy

1. Oral antihistamines. Antihistamines can help relieve sneezing, itching, a runny nose and watery eyes.
2. Decongestants. Oral decongestants such as pseudoephedrine (Sudafed, Afrinol, others) can provide temporary relief from nasal stuffiness.
3. Nasal spray.
4. Combination medications.

What are the main allergies?

Common allergies

• grass and tree pollen – an allergy to these is known as hay fever (allergic rhinitis)
• dust mites.
• animal dander, tiny flakes of skin or hair.
• food – particularly nuts, fruit, shellfish, eggs and cows’ milk.
• insect bites and stings.
• medicines – including ibuprofen, aspirin and certain antibiotics.

A group of the eight major allergenic foods is often referred to as the Big-81 and comprises milk, eggs, fish, crustacean shellfish, tree nuts, peanuts, wheat and soybean….

What causes a person to have an allergy to something?

Allergies occur when your immune system reacts to a foreign substance — such as pollen, bee venom or pet dander — or a food that doesn’t cause a reaction in most people.

What is the medical definition of an allergy?

Allergy: A misguided reaction to foreign substances by the immune system, the body system of defense against foreign invaders, particularly pathogens (the agents of infection). The allergic reaction is misguided in that these foreign substances are usually harmless. The substances that trigger allergy are called allergen.

Which is an example of an allergic reaction?

What’s the difference between a cold and an allergy?

A virus causes a cold while allergies are a reaction caused by an immune system response to certain substances in your surroundings. Some of the symptoms of environmental allergies include: If you have asthma, your symptoms might be severe and even life-threatening.

What is the best treatment for severe allergies?

For severe allergies or allergies not completely relieved by other treatment, your doctor might recommend allergen immunotherapy. This treatment involves a series of injections of purified allergen extracts, usually given over a period of a few years.

How can allergies affect your body?

Allergies can effect the body in many ways by having a direct effect on the target organ such as the respiratory system, gastrointestinal system or skin. Allergies also can frequently cause headaches, fatigue and irritability.

What to take for allergies?

Quercetin, grape seed extract and vitamin C are all good sources of allergy relief. You can buy supplements or take them in through the foods you eat. Apples, bananas, onions and red wine all contain allergy-fighting nutrients.

What is considered a severe allergic reaction?

Anaphylaxis is a severe allergic reaction – the extreme end of the allergic spectrum – and is life-threatening. Anaphylaxis is a medical emergency, and requires immediate treatment. Symptoms include life-threatening airway and/or breathing difficulty. Blood pressure can drop rapidly causing dizziness/fainting.