Shih Tzu allergies are as common as other diseases that effect both dogs and humans. In fact, both Shih Tzu and Shih Tzu owners may suffer from some common diseases such as diabetes, cardiac problems, obesity and many others. And Shih Tzu allergies may occur more or less in the same way as with human. Although diseases like diabetes, cardiac problems or obesity may stem from unhealthy dietary and physical activity management, allergies may occur from many different types of allergens.

As asserted by veterinarians, Shih Tzu allergies may show the most common symptom of itching sensation all over the skin area. Shih Tzu allergies may occur in the respiratory system as well. When the allergies occur in the respiratory system most commonly the symptoms like coughing, sneezing and wheezing become apparent. In fact, there is a great similarity between the symptoms occurring in both humans and Shih Tzu dogs. Nose and eyes discharge frequently just like with a cold or the flu. Allergies may affect the digestive system also. If so, Shih Tzu may exhibit symptoms like vomiting, watery stools or diarrhea.

There are different forms of Shih Tzu allergies. In other words, Shih Tzu may suffer from various forms of allergies. For example, Shih Tzu may have allergies from flea's saliva. In order to conclude whether a particular Shih Tzu is susceptible to flea saliva, it is essential to take the dog in for a skin allergy examination. If it is discovered that the Shih Tzu is allergic to the flea saliva it is best to implement a flea control program, however the owner should take care about using the safest products possible.

Some individuals are allergic to certain types of foods. The same is true for few Shih Tzu dogs. There are certain food products such as beef, soy products, fish, eggs, chemical preservatives, milk, wheat and artificial sweeteners that may cause allergic reactions in Shih Tzu dogs. Additionally, food allergies may also occur due to the consumption of non-verified foods. Providing only commercially manufactured dog foods to the Shih Tzu can minimize the possibility of developing food allergies.

Atopic dermatitis is another significant type of Shih Tzu allergies. This occurs mainly because of the hypersensitivity towards the immune system caused by different environmental substances such as molds or dust mites. The common symptoms of atopic dermatitis are excessively licking and chewing of the paws, abdomen and rear feet. This allergic reaction affects the armpit region, in-between the toes of the paws, and in the groin.

Shih Tzus may become allergic due to a bacterial infection. This can seriously affect the health of a Shih Tzu. Typically, the Shih Tzu has certain types of bacteria over their skin, while most of them are harmless to them. These bacteria belong to Staphylococcus family. However, there are certain other types that cause allergies to them. The most common symptoms of bacterial allergy are hair loss and the formation of marks resembling ringworm in the affected skin area. Statistically, it is estimated that over twenty percent of the dog population in the United States are affected by allergic reactions.