<unk> , also known as nail splitting and brittle nails, is a splitting of the free-edged tip of the nail. There is also often a longitudinal split in addition to the separation of keratin layers.
Onychoschizia
Onychauxis
Koilonychia
Cryptotia
Onychophosis
Auricular hypertrichosis
Platonychia
Hypertrichosis cubiti