It sounds like a filarial infection. You may also have strongyloides. The black hair types are filarial. The white ones that make cuts and come from nails etc are strongyloides. What type of fialarial Im usure. you will have to go by your symptoms ans see what matches best. Most can be treated with a combination of ivermectin, albendazole and doxycycline. Iver mectin also treats strongyloides.