Habronemiasis "Summer Sores"

Question 1

What are the intermediate hosts?

Answer 1

Stomoxys calcitrans and the musca domestica

Question 1

What are the three nematodes that cause Habronemiasis?

Answer 1

Habronema muscae
Habronema majus
Draschia megastoma

Question 2

What dermatologic problem can cause Habronemiasis?

Answer 2

Cutaneous ulcerative granulomas in the horse

Question 3

What is the infectious stage for habronemiasis?

Answer 3

L3 lavargeal stage

Question 4

The fly is attracted for moist areas like…

Answer 4

Medial canthus
Nostrils
Vulvae
Teats
Comisure of lips
Wounds

Question 5

How are the lesions caused by this disease?

Answer 5

Lesions may be solitary or multiple and consist of ulcerative granulomas which may contain necrotic areas with calcified foci
Some horses can develop HYPERSENSITIVITY

Question 6

What is the nematode that causes large masses and abscesses in the stomach in the horses?

Answer 6

Draschia megastoma

Question 7

Differentials for habronemiasis

Answer 7

Infectious granulomas
Eosinophilic granulomas
Neoplasia (squamous cell carcinoma and sarcoids) exuberant granulation tissue

Question 8

Treatment for habronemiasis

Answer 8

Topical therapy with ivermectin and/or glucocorticoids may help resolution.
Cryotherapy for removing larger masses.

Question 9

Prevention for habronemiasis

Answer 9

Ivermectin
Moxidectin