/ / Dirofilariasis in dogs: symptoms, treatment

Dirofilariasis in dogs: symptoms, treatment

Dirofilariasis is a parasitic disease of carnivores that is caused by a cardiomatode worm of the genus Dirofilaria. There is pulmonary (cardiac) dirofilariasis and subcutaneous.

The body of the causative agent of the disease is a dystrophiliaOn the filament and in length reaches 25-30 cm. They parasitize in the cavity of the pulmonary artery in the right ventricle of the heart. Rarely, dyrofilaria are found in unusual places: the brain, eyes, subcutaneous tissues, abdominal cavity and spinal cord.

Infection of dogs occurs with the help of mosquitoes,Which carry invasive larvae into the blood of the animal. Larvae develop within three months in the connective and subcutaneous adipose tissue. Two months later they begin to actively migrate to the subcutaneous tissue, gradually growing up.

Dirofilaria live in the host organism for up to two years. In a day, one female gives birth to up to thirty thousand larvae.

Symptoms of dirofilariasis in dogs

Treatment of dirofilariasis in dogsThe clinical symptoms of dirofilariasis depend on how long worms have settled in the body and affect the heart and lungs.

  • In the heat, dirofilariasis in dogs is manifested by dermatitis (itching, reddening of the skin, sores, hair loss). In winter, the symptoms are smoothed out.
  • Some animals are diagnosed with swellingSkin size up to the chicken egg in the area of ​​the mammary glands, facial skull, limbs. When cutting through swelling, purulent exudate or clear liquid is secreted. A few parasites can already be found in the swelling cavity.
  • The dog sharply grows thin, experiences weakness andFast fatigue, sleeps a lot. She has chronic shortness of breath, dry cough, cyanosis of the skin, wheezing in the lungs. When coughing, spitting with blood can be observed.
  • Later, abdominal and thoracic edema develop, not only the activity of the lungs and heart, but also of the kidneys and the nervous system is disrupted.
  • With dyrofilariasis, subcutaneous tissue is very often asymptomatic. Sometimes the skin lesions on the paws and in the head region, as well as nervous phenomena, can be observed.


There is no clear drug therapy yetDirofilariasis. Most often used drugs such as mebendazole, levamisole, dithiazanin. However, they are not sufficiently microfilaricidal, that is, there may be a remission of the disease.

In the most severe cases, helminths are removed through the incision surgically. However, they can not be removed if the helminths are in complicated anatomical areas: eyes, etc.

Due to the severity of the disease, its prevention is very important. It includes avoiding contact with bloodsucking insects. For this, you need to use an insecticaricidal collar and drops in the summer.

a source
Pay attention to: