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FingernailAka: Toenail, Onychogryposis, Onychomadesis, Onychoschizia, Onychotillomania, Nail Growth, Hyponychium, Eponychium, Cuticle, Anonychia, Onychodystrophy
- See Also
- Nail Abnormality
- Nail-Related Growths
- Anatomy
- Images
- Germinal matrix
- Root of the nail
- Forms nail plate from base of nail bed
- Distal matrix produces deeper nail plate
- Proximal matrix produces superficial nail plate
- Eponychium
- Skin just proximal to cuticle
- Dorsal fold at proximal surface of nail
- Paronychial edge or Perionychium
- Lateral borders of nail
- Site of hangnails and Paronychia
- Hyponychium
- Area beneath free edge of nail
- Junction where nail bed meets tip of digit skin
- Nail Plate
- Hard and translucent
- Composed of dead keratin
- Surrounded by perionychium
- Nail Bed (Sterile Matrix)
- Adheres to underside nail with squamous epithelium
- Makes nail plate thicker and stronger
- Contains blood vessels and nerves
- Physiology: General
- Nail is keratinized squamous cells
- Forms protective plate
- Enhances fingertip sensation
- Nail acts as counterforce to fingertip
- Two Point Discrimination decreased when nail absent
- Physiology: Nail Growth
- Normal Nail Growth
- Fingernails
- Grow 3 mm per month
- Require 6 months for complete re-growth
- Toenails
- Require 2-3 times as long to re-grow as fingernails
- Arrested Nail Growth
- Caused by any systemic illness
- Results in deep transverse grooves (Beau's Lines)
- Definitions
- Anonychia
- Absent nails
- Chromonychia (see Nail Discoloration)
- Color changes of nails
- Koilonychia
- Spoon-shaped nails
- Onychodystrophy
- Degenerative changes of nail
- Onychogryposis
- Hypertrophic shape changes of nail
- Onycholysis
- Loosening or detachment of nail from nail bed
- Onychomadesis
- Spontaneous separation from nail matrix
- Onychomycosis
- Fungal infections of the nail
- Onychophagia
- Nail biting
- Onychoschizia
- Splitting, horizontal layering of distal nail edge
- Onychotillomania
- Compulsive pulling or picking of nails
- Paronychia
- Inflammation of skin around nails
Dystrophia unguium (C0221260)
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| Concepts | Disease or Syndrome (T047)
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| ICD9 | 703.8 |
| English | Dystrophia unguium, Dystrophic nail, Dystrophic nails, Nail dystrophy, Onychodystrophy |
| Spanish | distrofia de uñas, distrofia de unas, onicodistrofia |
| Credits | Derived from the NIH UMLS (Unified Medical Language System)
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| Concepts | Body Part, Organ, or Organ Component (T023)
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| English | Eponychium |
| Spanish | eponiquio, eponychium |
| Credits | Derived from the NIH UMLS (Unified Medical Language System)
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Structure of hyponychium (C0221998)
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| Concepts | Body Part, Organ, or Organ Component (T023)
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| English | Hyponychium, Structure of hyponychium |
| Spanish | estructura del hiponiquio, hiponiquio, hyponychium |
| Credits | Derived from the NIH UMLS (Unified Medical Language System)
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Structure of nail of finger (C0222001)
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| Concepts | Body Part, Organ, or Organ Component (T023)
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| English | Finger Nail, Fingernail, Fingernails, Nail of finger, Nail plate of finger, Structure of nail of finger |
| Spanish | estructura de la uña de un dedo de la mano, estructura de la una de un dedo de la mano, uña de dedo de la mano, una de dedo de la mano |
| Credits | Derived from the NIH UMLS (Unified Medical Language System)
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Structure of nail of toe (C0222007)
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| Concepts | Body Part, Organ, or Organ Component (T023)
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| English | Nail of toe, Nail plate of toe, Structure of nail of toe, Toe Nail, Toenail, Toenails |
| Spanish | estructura de la uña del dedo del pie, estructura de la una del dedo del pie, uña del dedo del pie, uña del pie, una del dedo del pie, una del pie |
| Credits | Derived from the NIH UMLS (Unified Medical Language System)
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Onychotillomania (C0233623)
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| Concepts | Mental or Behavioral Dysfunction (T048)
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| English | Neurotic picking at nails, Onychotillomania |
| Spanish | onicotilomanÃa, onicotilomania, tendencia neurótica a querer arrancarse las uñas, tendencia neurotica a querer arrancarse las unas |
| Credits | Derived from the NIH UMLS (Unified Medical Language System)
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Lamellar nail splitting (C0263531)
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| Concepts | Sign or Symptom (T184)
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| English | Flaking of nails, Horizontal splitting of nail plate, Lamellar nail dystrophy, Lamellar nail splitting, Onychoschizia, Peeling of nails |
| Spanish | desprendimiento horizontal de las capas de la uña, desprendimiento horizontal de las capas de la una, onicosquicia, onicosquisis |
| Credits | Derived from the NIH UMLS (Unified Medical Language System)
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Onychogryposis (C0263537)
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| Concepts | Disease or Syndrome (T047)
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| ICD9 | 703.8 |
| English | Hook nail, Onychogryphosis, Onychogryposis |
| Spanish | onicogrifosis, uña en gancho, una en gancho |
| Credits | Derived from the NIH UMLS (Unified Medical Language System)
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| Concepts | Sign or Symptom (T184)
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| English | Complete loss of nails, Complete nail loss, NAIL LOSS, Onychomadesis, Spontaneous shedding of nail from nail matrix |
| Spanish | defluvium unguium, onicomadesis, pérdida completa de las uñas, perdida completa de las unas |
| Credits | Derived from the NIH UMLS (Unified Medical Language System)
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| Concepts | Congenital Abnormality (T019)
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| ICD9 | 757.5 |
| English | ANONYCHIA, ANONYCHIA CONGENITA, Congenital absent nails, HYPONYCHIA CONGENITA |
| Spanish | anoniquia, ausencia congénita de uñas, ausencia congenita de unas |
| Credits | Derived from the NIH UMLS (Unified Medical Language System)
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