What are the nail diseases and disorders?

1. Onychomycosis (fungal infection of the nail)
2. Paronychia (infection of the skin around the nail)
3. Ingrown toenail
4. Nail psoriasis
5. Beau's lines (indentations that run across the nails)
6. Onycholysis (separation of the nail from the nail bed)
7. Nail pitting (small depressions or holes in the nail)
8. Koilonychia (spoon-shaped nails)
9. Nail clubbing (enlargement of the fingertips and nails)
10. Nail trauma (injury to the nail)

Nail Diseases

- Onychomycosis: Fungal infection of the nail
- Paronychia: Bacterial or fungal infection of the nail fold
- Onychocryptosis (ingrown nail): Nail that grows into the surrounding skin
- Onycholysis: Separation of the nail from the nail bed
- Pterygium inversum unguis: Overgrowth of the cuticle over the nail
- Nail psoriasis: Psoriasis on the nails
- Nail lichen planus: Lichen planus on the nails
- Tinea unguium: Fungal infection of the nail, also known as athlete's foot of the nail
- Candida onychomycosis: Fungal infection of the nail caused by Candida yeast
- Eccrine poroma: Benign tumor of the nail that produces sweat

Nail Disorders

- Leukonychia: White spots or streaks on the nails
- Melanonchia: Brown or black streaks or spots on the nails
- Pitting: Small indentations in the nail surface
- Grooving: Parallel lines or ridges in the nail
- Brittleness: Nails that are dry, brittle, and break easily
- Thickening: Nails that are thicker than normal
- Beau's lines: Transverse lines on the nails caused by temporary interruption of nail growth
- Koilonychia: Spoon-shaped nails
- Clubbing: Enlarged and rounded fingertips with nails that curve downward
- Pachyonychia congenita: Thick, discolored nails present at birth
- Trachyonychia: Rough, sandpaper-like nails
- Hapazonychia: Partial or complete absence of a nail
- Anychia: Complete absence of nails