| nails, ingrown | Excessive lateral nail growth into the nail fold. Because the lateral margin of the nail acts as a foreign body, inflammation and granulation may result. It is caused by improperly fitting shoes and by improper trimming of the nail. (12 Dec 1998) |
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| nails, malformed | Deformities in nail structure or appearance, including hypertrophy, splitting, clubbing, furrowing, etc. (12 Dec 1998) |
| nails, ringworm of the | See Nail infection, fungal. (12 Dec 1998) |
| hidden nail skin | 1. The thin, condensed, eleidin-rich layer of epidermis which procedes and initially covers the nail plate in the embryo. It normally degenerates by the eighth month except at the nail base where it remains as the cuticle of the nail. 2. The corneal layer of epidermis overlapping and in direct contact with the nail root proximally or the sides of the nail plate laterally, forming the undersurface of the nail wall or nail folds of nail. Synonym: hidden nail skin, perionychium. 3. The thin skin adherent to the nail at its proximal portion. Synonym: epionychium. Origin: G. Epi, upon, + onyx (onych-), nail (05 Mar 2000) |
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| horny layer of nail | The outer, horny layer of the nail. Synonym: cornified layer of nail, horny layer of nail. (05 Mar 2000) |
| shell nail | Bronchiectasis with excessive longitudinal curvature of the nail plate and atrophy of the nail bed and underlying bone. (05 Mar 2000) |
| sinus of nail | sinus unguis |
| Smith-Petersen nail | A flanged nail for pinning a fracture of the neck of the femur. (05 Mar 2000) |
| spoon nail | <clinical sign> Dystrophy of the fingernails, sometimes associated with iron deficiency anaemia, in which they are thin and concave, with the edges raises. Synonym: spoon nail. (15 Nov 1997) |
| syndrome, nail-patella | Hereditary dominant condition with abnormally formed (dysplastic) or absent nails and absent or underdeveloped (hypoplastic) kneecaps (patellae). Other features include iliac horns (symmetrical bilateral central posterior iliac processes), abnormality of the elbows interfering with full range of motion (pronation and supination) and kidney disease resembling glomerulonephritis which.is often mild but can be progressive and lead to renal failure. The nail-patella gene locus found linked genetically to the abo blood group in1965 is now known to be in chromosome region 9q34. Also called onychoosteodysplasia, turner-kieser syndrome, and fong disease. (12 Dec 1998) |
| ingrown nail | A toenail, one edge of which is overgrown by the nailfold, producing a pyogenic granuloma; due to faulty trimming of the toenails or pressure from a tight shoe. Synonym: ingrowing toenail, onychocryptosis, onyxis, unguis aduncus, unguis incarnatus. (05 Mar 2000) |
| occult border of nail | The proximal border of the nail entirely covered by the nail wall. Synonym: margo occultus unguis, occult border of nail. (05 Mar 2000) |
| egg shell nail | Thinning of nails resulting in bending and breaking of the free edge, with longitudinal fissures. Synonym: egg shell nail. Origin: hapalo-+ G. Onyx (onych-), nail (05 Mar 2000) |
| tooth-and-nail syndrome | <syndrome> Hypodontia associated with absent or very small nails at birth. Common among Dutch Mennonites in Canada. (05 Mar 2000) |
| twenty-nail dystrophy | Longitudinal ridging of all of the nails; seen in alopecia areata and lichen planus. (05 Mar 2000) |
| yellow nail | The complete or almost complete cessation of all nail growth, with thickening of the nails, increase in the convexity, loss of cuticles, and yellowing; the resulting onycholysis can cause loss of some of the nails; the condition is often associated with pulmonary disease but differs from clubbing in that the soft tissues are not hypertrophic. Synonym: yellow nail syndrome. (05 Mar 2000) |
| yellow nail syndrome | The complete or almost complete cessation of all nail growth, with thickening of the nails, increase in the convexity, loss of cuticles, and yellowing; the resulting onycholysis can cause loss of some of the nails; the condition is often associated with pulmonary disease but differs from clubbing in that the soft tissues are not hypertrophic. Synonym: yellow nail syndrome. (05 Mar 2000) |
| Kuntscher nail | An intramedullary nail used for internal fixation of a fracture. (05 Mar 2000) |