International Standard Version he's a man with an infectious skin disease. He's unclean. The priest is to declare him unclean on account of the skin rash in his head.
American Standard Version he is a leprous man, he is unclean: the priest shall surely pronounce him unclean; his plague is in his head.
Young's Literal Translation he is a leprous man, he is unclean; the priest doth pronounce him utterly unclean; his plague is in his head.