Many skin problems that occur with toy dogs are due to allergies. The most common forms of allergies are those associated with foods or parasites. In dogs scabies is caused not only by mites infesting the surface of the skin but also because of the dogs reaction to the presence of the by products produced by the mites. Dogs can develop three different types of major allergic diseases. They may also develop a number of minor diseases as well. It is important to understand that while allergies can be treated they cannot be cured. Diagnosing the problem can also be a lengthy process sometimes.

The most common allergic reaction experienced by dogs is flea allergy dermatitis. This disorder involves four different allergic mechanisms. It occurs in all breeds including the Havanese. You should look for signs of itching as this is major indicator of an allergic reaction to fleas. There is a mistaken assumption that all dogs have fleas. This is in fact not the case. Only some dogs have fleas. There is also an assumption that all dogs are allergic to fleas. And again whilst all breeds of dogs can suffer allergies to fleas this does not mean that all dogs will suffer an allergic reaction to fleas. Whilst stray dogs are more likely to actually have fleas. A well cared for pet which does not encounter fleas very often is more likely to be hypersensitive to flea bites. This is an important point when it comes to caring for your Havanese as they will no doubt be well groomed and thus are sometimes hypersensitive.

When the flea bites the dog it injects saliva into the skin. The purpose of this saliva is to stop the dog’s blood from coagulating. It is agents found within this saliva which can cause the allergic reaction to become trigger. The dog will respond with a variety of immunological responses. Most dogs will feel itchy at that rear half of their body. Other common locations for flea elegies are the point where the tail joins the body, the groin, stomach or the back legs. If you see your Havanese scratching the rear half of its body a lot then even if there is no sign of fleas the major culprit will still be a flea allergy.

The constant scratching and irritation that the fleas cause can produce lesions. The treatment for this is available through veterinarians. In order to have good flea control in your home it is necessary that all animals and humans are part of the treatment plan.

The other common form of allergy in dogs is canine atopic dermatitis. This is similar to hay fever which is suffered by humans. If your dog is exposed to allergens such as grass, mold spores, dust mites, or trees then they will begin to start itching. This itching will be for the most part on the face, feet, and ears and on their rear. But the itching can also be all over their body.