Filaria
Filaria
Filaria (pronounced: /fɪˈlɛəriə/) is a term used to describe a group of parasitic worms that are part of the family Filarioidea. These worms are known to cause a variety of diseases in humans, including lymphatic filariasis and onchocerciasis.
Etymology
The term "Filaria" is derived from the Latin word "filum", which means thread. This is in reference to the thread-like appearance of these worms.
Description
Filaria are long, slender worms that can range in size from a few millimeters to several centimeters. They are typically found in the blood, lymphatic system, or subcutaneous tissues of their hosts. The life cycle of filaria involves a definitive host (usually a mammal) and an intermediate host (usually a mosquito or fly).
Diseases caused by Filaria
Filaria are known to cause several diseases in humans. These include:
- Lymphatic filariasis: This is a disease caused by the filarial worms Wuchereria bancrofti, Brugia malayi, and Brugia timori. It is characterized by the chronic swelling of the limbs and genitals, a condition known as elephantiasis.
- Onchocerciasis: Also known as river blindness, this disease is caused by the filarial worm Onchocerca volvulus. It can lead to severe itching, skin discoloration, and blindness.
- Loiasis: This disease is caused by the filarial worm Loa loa. It is characterized by the migration of the adult worm across the surface of the eye, a condition known as "eye worm".
Treatment
Treatment for filarial diseases typically involves the use of antiparasitic drugs, such as ivermectin, diethylcarbamazine, and albendazole. In some cases, surgical intervention may be necessary to alleviate the symptoms of the disease.
Related Terms
- Helminthiasis: A general term for diseases caused by parasitic worms.
- Nematode: A phylum of worms that includes the filaria.
- Parasitology: The study of parasites and parasitic diseases.
External links
- Medical encyclopedia article on Filaria
- Wikipedia's article - Filaria
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