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Allergology · Respiratory allergies

Pet allergies

Pet allergies are common. They mainly cause sneezing, a runny nose and stinging eyes, and sometimes breathing difficulties. Contrary to popular belief, it is not the hair that causes the allergy, but tiny proteins found in the animal’s saliva, urine and dead skin. These proteins settle on the hair, float in the air and remain in the home for a long time.

Written by Dr A. Turcarelli, dermatologist and allergist Updated 6 January 2026 5 min read

Introduction

They can cause nasal, eye and chest symptoms, sometimes severe, and may persist even without direct contact with the animal.

Symptoms

  • Repeated sneezing
  • Runny or blocked nose
  • Itchy nose
  • Red, watery or itchy eyes
  • Chronic cough
  • Wheezing
  • Shortness of breath
  • Worsening of existing asthma
  • Fatigue and poor sleep

Causes

Cats (the most common cause)
Dogs
Rodents (hamsters, guinea pigs)
Rabbits
Horses (through work or riding)

Diagnosis

  1. Detailed history (animals present, living environment)
  2. Link between exposure and symptoms
  3. ENT and respiratory examination
  4. Appropriate allergy tests (skin prick tests, blood tests)
  5. Assessment for associated asthma if needed

Treatments

Measures to avoid or reduce exposure
Antihistamines
Nasal corticosteroids
Asthma treatment if present
Environmental measures (ventilation, cleaning, fewer soft furnishings)
Desensitisation (allergen immunotherapy) in selected cases
effective symptom control

Management

Confirm the pet allergy

Identify exactly which animal is responsible

Assess whether avoidance measures are needed

Tailor medical treatment

Discuss whether desensitisation is appropriate

Improve your quality of life in the long term

Frequently asked questions

Consultation for pet allergies

Consultation with a confirmed diagnosis and a written treatment plan.

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