| Reaction | |
|---|
| Abnormal nail growth (see onychauxis) | |
| Atrophic nails (onychatrophy) (1) | |
| Beading (1) | |
| Beau's lines (14) | |
| Blue lunulae (2) | |
| Brittle nails (10) | |
| Chromonychia (see discoloration / nails (dyschromia) | |
| Discoloration / nails (dyschromia) (14) | |
| Elkonyxis (2) | |
| Exfoliation (1) | |
| Herpetic whitlow (1) | |
| Hyponychial dermatitis (2) | |
| Koilonychia (1) | |
| Leukonychia striata (Mees' lines) (23) | |
| Longitudinal ridges (1) | |
| Median canaliform dystrophy (1) | |
| Melanonychia (18) | |
| Muehrcke's lines (4) | |
| Nail changes (37) | |
| Nail disorder (25) | |
| Nail dystrophy (20) | |
| Nail growth (2) | |
| Nail growth reduced (1) | |
| Nail hypoplasia (3) | |
| Nail loss (11) | |
| Nail pigmentation (53) | |
| Nail pitting (1) | |
| Nail thickening (2) | |
| Nail thinning (1) | |
| Nail toxicity (9) | |
| Onychauxis (abnormal nail growth) (2) | |
| Onychocryptosis (ingrowing toe nail) (10) | |
| Onychodermal band (2) | |
| Onychodystrophy (1) | |
| Onycholysis (34) | |
| Onychomadesis (10) | |
| Onychomycosis (6) | |
| Onychopathy (6) | |
| Onychoschizia (2) | |
| Paronychia (45) | |
| Parrot beak nails (3) | |
| Periungal hyperpigmentation (1) | |
| Periungual granuloma (4) | |
| Periungual infection (2) | |
| Periungual inflammation (1) | |
| Photo-onycholysis (27) | |
| Pincer nails (2) | |
| Psoriasis (nails) (2) | |
| Pyogenic granuloma (21) | |
| Ridging (2) | |
| Shoreline nails (3) | |
| Splinter hemorrhage (5) | |
| Subungual abscess (2) | |
| Subungual hematoma / subungual hemorrhage (5) | |
| Subungual hyperkeratosis (8) | |
| Transverse depression (1) | |
| Transverse superficial loss of nail plate (1) | |
