Dictionary > Subcutaneous filariasis

Subcutaneous filariasis

Definition
noun
A type of filariasis caused by adult filarial worms that dwell in the subcutaneous layer of the skin
Supplement
Filariasis is a disease associated with the infection of filariae within the definitive host, e.g. human host. It may be classified into three groups: (1) lymphatic filariasis, (2) subcutaneous filariasis, and (3) serous cavity filariasis.
In subcutaneous filariasis, the filariasis is caused by parasitic roundworms that occupy the subcutaneous layer of the skin (fat layer).
The roundworms that have been associated with subcutaneous filariasis are Loa loa, Mansonella streptocerca, and Onchocerca volvulus.
Loa loa (also called eye worm) is a filarial nematode common in Africa and India. Its larvae use horseflies (Chrysops) as intermediate hosts. These insects transmit the worm to a definitive host, e.g. humans, by insect bite. Filariasis caused particularly by Loa loa is called loiasis or Loa loa filariasis.
Mansonella streptocerca is mostly found in West and Central Africa. Its intermediate host is a midge insect (Culicoides sp.). The definitive hosts are humans and chimpanzees.
Onchocerca volvulus is a filarial nematode that can cause river blindness (onchocerciasis) and is found mostly in Africa. The intermediate host of this worm is the black fly. The only known definitive host is humans. Infestation with this worm results in blindness when the corneal stroma thickens due to chronic corneal inflammation.
See also:


You will also like...

Cambial cells
Plant Tissues

Plant organs are comprised of tissues working together for a common function. The different types of plant tissues are m..

Control of body movement
Control of Body Movement

Some of the body movements can be controlled at will, others cannot. The body has a motor program, which is the pattern ..

primitive arthropods
Arthropods

The arthropods were assumed to be the first taxon of species to possess jointed limbs and exoskeleton, exhibit more adva..

Freshwater Ecology
Freshwater Ecology

Freshwater ecology focuses on the relations of aquatic organisms to their freshwater habitats. There are two forms of co..

human respiratory system
Respiration

The human respiratory system is an efficient system of inspiring and expiring respiratory gases. This tutorial provides ..

Homeostasis by water regulation
Homeostasis of Organism Water Regulation

Osmoregulation is the regulation of water concentrations in the bloodstream, effectively controlling the amount of water..

Related Articles...

No related articles found

See all Related Topics