After a dog is infected with heartworms, it needs to be treated with medication immediately. The dog can be treated with a drug containing diethylcarbamazine orally. However, during treatment, owners should pay attention to the dog's physical condition. Larger insect fragments may block the dog's pulmonary artery, and the dog's body will have symptoms such as difficulty breathing, coughing up blood, and heart failure. If this abnormality occurs, You need to go to the hospital for medical treatment immediately.

Symptoms of canine heartworm:

1. The earliest symptom is chronic cough, but there are no other symptoms of upper respiratory tract infection. It is aggravated by exercise or exercise. Sick dogs are prone to fatigue.

2. As the disease progresses, the sick dog develops hyperpalpitations, a thin and intermittent pulse, and a murmur in the heart. The liver area is painful on palpation and hepatomegaly. Fluid accumulation in the chest and abdomen, and edema all over the body. Difficulty breathing.

3. In cases of long-term infection, pulmonary heart disease is very obvious.

4. In the final stage, death occurs due to systemic weakness or collapse during exercise.

5. Sick dogs are often accompanied by nodular skin disease, which is characterized by itching and multiple focal nodules that tend to rupture. Skin nodules are pyogenic granulomatous inflammation in the center of blood vessels. Microfilariae are commonly found in the blood vessels surrounding pyogenic granulomas.