Allerio

Allergy Information Center
Browse detailed information about common allergies based on comprehensive data.
Pollen Allergy

Pollen Allergy

An allergic reaction to pollen from trees, grasses, and weeds, commonly known as hay fever.

Common Symptoms
Sneezing
Runny or stuffy nose
Itchy or watery eyes
Scratchy throat
Coughing
Common Triggers

Tree pollen (e.g., oak, birch), grass pollen (e.g., rye, timothy), weed pollen (e.g., ragweed)

All ages
Prevalence: 10-30% of adults
Nationwide
Food Allergy

Food Allergy

An immune system reaction that occurs soon after eating a certain food. Even a tiny amount of the allergy-causing food can trigger signs and symptoms.

Common Symptoms
Tingling or itching in the mouth
Hives, itching or eczema
Swelling of the lips, face, tongue and throat
Anaphylaxis
Common Triggers

Peanuts, tree nuts, milk, eggs, soy, wheat, fish, shellfish.

All ages
Prevalence: ~8% of children, ~4% of adults
Nationwide
Insect Sting Allergy

Insect Sting Allergy

An overreaction of the immune system to the venom of stinging insects.

Common Symptoms
Pain, redness, swelling at the sting site
Hives
Itching
Anaphylaxis (in severe cases)
Common Triggers

Bees, wasps, hornets, yellow jackets, fire ants.

All ages
Prevalence: ~5% of the population
Nationwide
Drug Allergy

Drug Allergy

An abnormal reaction of your immune system to a medication.

Common Symptoms
Skin rash
Hives
Itching
Fever
Anaphylaxis
Common Triggers

Penicillin and related antibiotics, sulfa drugs, chemotherapy drugs, NSAIDs (e.g., aspirin, ibuprofen).

All ages
Prevalence: Varies widely by drug
Nationwide
Latex Allergy

Latex Allergy

A reaction to certain proteins found in natural rubber latex, a product made from the rubber tree.

Common Symptoms
Itching
Skin redness
Hives or rash
Runny nose
Anaphylaxis
Common Triggers

Latex gloves, balloons, condoms.

All ages
Prevalence: <1% of the general population
Nationwide
Mold Allergy

Mold Allergy

An allergic reaction to mold spores, which can be found in damp areas indoors and outdoors.

Common Symptoms
Sneezing
Runny or stuffy nose
Cough and postnasal drip
Itchy eyes, nose and throat
Watery eyes
Common Triggers

Damp basements, bathrooms, rotting logs, compost piles.

All ages
Prevalence: Varies, common in damp climates
South
Pet Allergy

Pet Allergy

An allergic reaction to proteins found in an animal's skin cells, saliva, or urine.

Common Symptoms
Sneezing
Runny nose
Itchy, red or watery eyes
Asthma symptoms like wheezing and difficulty breathing
Common Triggers

Cats, dogs, rodents, and other furry animals.

All ages
Prevalence: Up to 20% of the population
Nationwide
Cockroach Allergy

Cockroach Allergy

An allergic reaction to the saliva, feces, and shedding body parts of cockroaches.

Common Symptoms
Coughing
Nasal congestion
Skin rash
Wheezing
Ear and sinus infection
Common Triggers

Cockroach presence in homes, especially in urban areas.

Children
Prevalence: Common in urban areas
South