Cutaneous larva migrans is produced by
a. Most common cause of cutaneous larva migrans is Ancylostoma brasiliensis.
b. CLM is caused by hookworms of other animals. The filariform larvae of these species of hookworms are unable to penetrate the basement membrane of human skin. A. caninum, Uncinaria stenocephala, Bunostomium phlebotomum are other causes.
c. CLM is also called creeping eruption. It is self limited. Treatment is topical thiabendazole.
The larva migrans is caused by invasion of the nematode larvae of animal origin in the visceral organs and skin of man. Man always acquires the infection as an accidental host. The helminths do not complete their normal cycle of development and their movement is arrested at some level in the human body.
The larva migrans is distinctly of two types:
a. Visceral larva migrans
b. Cutaneous larva migrans
Visceral larva migrans
It is a syndrome caused by migration or persistence of larval nematodes of animal origin in the deeper parts of the human body.
The condition is caused by:
1. Angiostrongylus cantonensis.
2. Angiostrongylus costaricensis.
3. Toxocara canis.
4. Toxocara cati
5. Anisakine species
6. Gnathostoma spinigerum.
Cutaneous larva migrans
This condition is also known as creeping eruption. This is an intense pruritic reaction of the skin caused by prolonged migration of dog and cat hookworms in man.
The causative agents are:
1. Ancylostoma braziliense.
2. Ancylostoma caninum.
3. Strongyloides stercoralis.
4. Necator Americanus.
5. Ancylostoma duodenale.
6. Bunostomum phlebotomus.
7. Uncinaria stenocephala
8. Gnathostoma spinigerum.