Thelaziasis
Thelaziasis
Thelaziasis (pronunciation: the-laz-i-a-sis) is a parasitic disease caused by the nematode species of the genus Thelazia. The disease is transmitted to humans and animals through the Phortica variegata fly, which acts as an intermediate host and vector for the parasite.
Etymology
The term "Thelaziasis" is derived from the genus name Thelazia, which was first described by the Italian parasitologist Spiridione Calogerà in 1910. The genus name Thelazia is of unknown etymology.
Symptoms
The symptoms of Thelaziasis can vary depending on the species of Thelazia involved and the host's immune response. Common symptoms in humans include conjunctivitis, keratitis, epiphora (excessive tearing), and blepharospasm (involuntary tight closure of the eyelids).
Diagnosis
Diagnosis of Thelaziasis is typically made by identifying the adult worms or larvae in the eye or conjunctival sac. Laboratory tests such as polymerase chain reaction (PCR) can also be used to identify the species of Thelazia.
Treatment
Treatment for Thelaziasis involves the physical removal of the worms from the eye, often under local anesthesia. In some cases, anthelmintic drugs such as ivermectin may be used.
Prevention
Prevention of Thelaziasis primarily involves controlling the population of the Phortica variegata fly and avoiding contact with these flies. Regular inspection and treatment of domestic animals for Thelazia can also help prevent transmission to humans.
External links
- Medical encyclopedia article on Thelaziasis
- Wikipedia's article - Thelaziasis
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