Common triggers of an allergic reaction

Pet Dander
Certain Plants and Pollen
Bee stings / insects bites
Nuts
Shellfish
Certain medications

Common symptoms

Hives (itchy red spots on the skin)
Nasal congestion
Itching
Rash

Symptoms that indicate a severe allergy :

Abdominal pain
Diarrhea
Pain or tightness in the chest
Difficulty in swallowing
Dizziness (vertigo)
Swelling of the face, eyes, or tongue
Flushed face
Fear or anxiety
Nausea or vomiting
Heart palpitations
Wheezing
Difficulty in breathing
Unconsciousness

Identifying the triggers:

An allergy specialist (allergist) can help find the exact cause of your allergy through:

Skin testing - the most common diagnostic method that involves exposing the skin to various substances and observing reactions over time.
Specific IgE (immunoglobulin E) blood tests to identify IgE antibodies that relate to specific antigens or triggers.
Tests involving removal of suspected allergens and then re-introducing them to see if a reaction occurs.
Blood test for allergy checks for antibodies against a possible allergen (An antibody is a protein the body produces to fight harmful substances)

How Is an Allergic Reaction Treated?

Allergies can be managed by consciously avoiding contact with suspected triggers and medical help. However, if a person shows symptoms of an allergy all of a sudden, immediate medical help is mandatory. Remember, some allergies can even prove fatal.

Consult a dermatologist

Consult a pulmonologist