Onycholysis is the separation or loosening of a fingernail or toenail from its nail bed.
Loosening of the nails, beginning at the free border, and usually incomplete.
SOME THING THAT CAN BE PASSED ON SUCH AS AN ILLNESS, LIKE THE FLU.In terms of human geo. it is the distance-controlled spreading of an idea, innovation, or some other item through a local population...