Animal allergies are related to a number of other conditions, including other allergies. People with pollen or dust mite allergies may be more likely to also have animal allergies. Also, people with outdoor allergies might experience reactions after contact with an outdoor animal, even if they do not have an animal allergy. This is because outdoor allergens such as pollen and mold can get caught in animal fur.

Specific allergies are not inherited, but the tendency to develop an allergy is inherited. If a parent is allergic to dander, for instance, a child has a higher likelihood of developing an allergy of some type, although not necessarily to dander. The risk of developing an allergy is much higher if both parents have allergies. People who are prone to develop allergies are said to be atopic.

Some of the common conditions related to animal allergies are:

• Allergic rhinitis.  An inflammation of the mucous membrane that lines the nose causing nasal congestion, sniffling and sneezing. Animal allergens can cause allergic rhinitis.
  
  

  

• Allergic conjunctivitis. An inflammation of the tissue lining the inside of the eyelid that produces irritation and tearing of the eyes. Animal allergies can cause acute allergic conjunctivitis symptoms.
  
  

  

• Contact dermatitis. An inflammation of the skin that is caused by direct contact with an allergen. A red, bumpy rash may appear when the skin comes into direct contact with an animal.
  
  

  

• Asthma. A condition in which breathing airways become blocked or narrowed, causing shortness of breath and breathing difficulty. Animal allergens can cause acute and chronic asthma symptoms. The incidence of asthma-like symptoms in cat owners is significantly higher than those who are exposed to other animals. There is also evidence to suggest that people with animal allergies are at increased risk of developing asthma.