Skip to content
My WebMD Sign In, Sign Up

Allergies Health Center

Font Size

Allergy Symptoms

Allergy symptoms can be categorized as mild, moderate, or severe.

Mild Allergy Symptoms

Mild allergy symptoms can include:

  • Rash
  • Localized itching
  • Congestion

Mild allergic reactions do not spread to other parts of the body.

Moderate Allergy Symptoms

Moderate allergic reactions can include symptoms that spread to other parts of the body, including:

  • Widespread itching
  • Difficulty breathing

Severe Allergy Symptoms (Anaphylaxis)

Anaphylaxis is a rare, life-threatening emergency in which the body's response to the allergen is sudden and affects the whole body. Allergy symptoms may within minutes progress to more serious symptoms, including:

  • Itching of eyes or face
  • Varying degrees of swellings that can make breathing and swallowing difficult
  • Abdominal pain
  • Cramps
  • Vomiting
  • Diarrhea
  • Mental confusion or dizziness

 

WebMD Medical Reference

Reviewed by Luqman Seidu, MD on May 19, 2014

Today on WebMD

man blowing nose
Make these tweaks to your diet, home, and lifestyle.
Allergy capsule
Breathe easier with these products.
 
cat on couch
Live in harmony with your cat or dog.
Woman sneezing with tissue in meadow
Which ones affect you?
 

woman sneezing
Slideshow
Bottle of allergy capsules and daisies
Article
 
Urban blossoms
Slideshow
Woman blowing nose
Slideshow
 

Send yourself a link to download the app.

Loading ...

Please wait...

This feature is temporarily unavailable. Please try again later.

Thanks!

Now check your email account on your mobile phone to download your new app.

Woman with itchy watery eyes
Slideshow
Allergy prick test
VIDEO
 
Man sneezing into tissue
Tools
woman with duster crinkling nose
Quiz