Normal growth= 0.1mm per day.

Anonychia (loss of a nail).

Onycholysis (destruction of the nail).

Onychophagia (nail damage by own bites).

Onycholauxis (nail hypertrophy).

Koylonychia (spoon nails in iron deficiency anemia).

Leukonychia (white discoloration of the nail).

Splinter hemorrhages (endocarditis).

Types of Nails:

1) Plummer's nails: separation of the nail bed -more in the ring finger- hyperthyroidism.
2) Terry's nails: white with normal pink tips (cirrhosis).
3) Lindsay's nails: half-and-half. proximal portion is white, distal portion is red (renal failure).
4) Muehrcke's nails: white transverse bands (Mees' lines) in hypoalbuminemia.
5) Beau lines: depressed creases (in trauma).
6) Blue nails: Wilson's disease. See Extremities for specific entries.