It is a filarial worm that loves hair follicles and feeds on blood. It can only be detected at night with a blood test or ICT cards. There is a specific way to test the blood to determine this thing. How to test for this is noted below. I have so much more I could say, however this is sufficient for now. Here is a web to search for- I could not post the link here.
Global Alliance to eliminate lymphatic filarias website for information. they use ICT cards for detection.