(12) - Cutaneous Habronemiasis

Question 1

1. Habronemiasis is a disease of horses more commonly seen where?
2. The disease is caused by the aberrant cutaneous penetration of what?
3. The Habronema adults reside where?
4. The larvae passed in the feces of horses are ingested by what?

Answer 1

1. in California and Florida.
2. the infective larvae of 3
   different species of Habronema.
3. in the horse stomach.
4. maggots of Musca domestica and
   Stomoxys calcitrans.

Question 2

1. The larvae can be deposited by the flies around the horse’s lips and then be ingested to
   complete their life cycle or they can be deposited on the surface of a previously damaged skin
   to cause habronemiasis.
2. The disease is first seen in the spring and lesions are usually present where?
3. Few horses with wounds will develop habronemiasis and recurrence on the same animal is common every year indicating what?

Answer 2

2. on the medial canthus of the eye, the male genitalia and lower extremities.
3. the development of a hypersensitivity reaction.

Question 3

1. The definitive diagnosis is based on what?
2. Three things should be kept in mind when managing this condition: reduce the size of the
   lesion, reduce the inflammation, and prevent re-infection.

Answer 3

1. skin biopsies.