What is an Allergy?
What is an Allergy?

Seasonal allergies are immune reactions to pollens, molds, or other triggers that are present for only one season or part of the year. Allergies occur when your immune system reacts to a foreign substance such as pollen, bee venom or pet dander.

The immune system produces proteins known as IgE antibodies. These antibodies protect you from unwanted invaders that could make you sick or cause an infection. When you have allergies, your immune
system makes antibodies that identify your particular allergen as something harmful, even though it isn't. This triggers the release of histamines and other substances that cause allergy symptoms.

Allergies can cause symptoms that involve your skin, sinuses, airways or digestive system. The severity of allergies varies from person to person and can range from minor irritation to anaphylaxis — a potentially life-threatening emergency.

Symptoms

Hay fever, also called allergic rhinitis

Congestion

Itchy, runny nose

Itchy, watery or swollen eyes (conjunctivitis)


Atopic dermatitis, an allergic skin reaction also called eczema

Itchy skin

Red skin

Flaking or peeling skin


Food allergy

Tingling mouth

Swelling of the lips, tongue, face or throat

Hives

Anaphylaxis


An insect sting allergy

A large area of swelling (edema) at the sting site

Itching or hives all over your body

Cough, chest tightness, wheezing or shortness of breath

Anaphylaxis


A drug allergy

Hives

Itchy skin

Rash

Facial swelling

Wheezing

Anaphylaxis

Loss of consciousness

Lightheadedness

Severe shortness of breath

A rapid, weak pulse

Skin rash

Nausea and vomiting

Swelling airways, which can block breathing



Causes


1)Airborne allergens, such as pollen, animal dander, dust mites and mold

2)Certain foods, particularly peanuts, tree nuts, wheat, soy, fish, shellfish, eggs and milk

3)Insect stings, such as bee stings or wasp stings

4)Medications, particularly penicillin or penicillin-based antibiotics

5)Latex or other substances you touch, which can cause allergic skin reactions


Western Medicine Treatment

Allergen avoidance

Medications to reduce symptoms

Immunotherapy

Emergency epinephrine



Adopted from Wei Laboratories, Inc.