What are Allergies?

An allergy is a reaction of your immune system to otherwise harmless substances that do not bother most other people.

Common signs of allergies

Allergy symptoms vary. Some common signs of seasonal allergies, hay fever, pollen allergies, mold allergies, dust allergies, pet allergies:
1. Runny nose
2. Sneezing
3. Congestion
4. Coughing
5. Watery, red, itchy, swollen eyes
6. Headaches
7. Ear congestion or frequent ear infections
8. Frequent sinus infections
9. Itching, rashes, swelling, hives
10. Asthma

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Common signs of food allergies:
1. Hoarse voice
2. Hives
3. Wheezing
4. Abdominal pain
5. Diarrhea
6. Difficulty swallowing
7. Vomiting
8. Stomach cramps
9. Shortness of breath
10. Swelling
11. Nausea
12. Runny nose
13. Light-headedness or fainting

Common signs of drug allergies:
1. Hives
2. Itching of the skin or eyes
3. Wheezing
4. Rash
5. Swelling of the lips, tongue, or face

A severe allergic reaction called anaphylaxis is life-threatening. It requires immediate medical attention from emergency professionals. Anaphylaxis can occur in response to any allergies. Common causes are from drug allergies, food allergies, and insect bites/stings. Symptoms of anaphylaxis are:
1. Abdominal pain
2. Abnormal (high-pitched) breathing sounds
3. Anxiety
4. Chest discomfort or tightness
5. Cough
6. Diarrhea
7. Difficulty breathing
8. Difficulty swallowing
9. Dizziness or light-headedness
10. Hives/itchiness
11. Nasal congestion
12. Nausea or vomiting
13. Palpitations
14. Skin redness
15. Slurred speech
16. Swelling of the face, eyes, or tongue
17. Unconsciousness
18. Wheezing

Learn more about allergies & allergists:

What is allergy testing?
What is an allergist?
What is asthma?

Allergies can also be know as seasonal allergies or hay fever.