Please refer to this excellent book "Lymphatic Filariasis" "http://www.sanarialab.com/p/books.html" by Dr D.K Panda. He explains in detail the diagnosis and treatment of Elephantiasis (Filaria). He has a Phd in Filaria and has explained in simple terms the cause and the cure of this disease.
The link to the book site is
http://www.sanarialab.com/p/books.html

Thanks