Depends on how you pronounce it. If you say "lycan" in the English way, you subtly imply that a werewolf is a symbiotic relationship between a fungus and a photosynthetic alga or cyanobacteria. Which, let's admit it, is awesome.
Yes, so lets say they've got a slightly more mottled fur. Bit white-greenish. Take that a few steps further, change the fur to hyphae filaments, growing on the person. Exposed to the light of the full moon, the rapid appearance will tear skin and clothes apart. Would do very well in the rain forest.
Just need a better word for lunar-synthesis.
edit:
Also card carrying member of Meridia, the Daedra of workaholics, fast music, superheated economies and other entities heading for a burnout.