| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Longitudinal brown stripes in nails | Interprets | True | Color of nail | Inferred relationship | Existential restriction modifier | 2 | 
| Physiological brown stripes in nails | Interprets | True | Color of nail | Inferred relationship | Existential restriction modifier | 2 | 
| White nails | Interprets | True | Color of nail | Inferred relationship | Existential restriction modifier | 2 | 
| Striate leuconychia | Interprets | True | Color of nail | Inferred relationship | Existential restriction modifier | 2 | 
| White flecks in nails | Interprets | True | Color of nail | Inferred relationship | Existential restriction modifier | 2 | 
| Large lunula | Interprets | True | Color of nail | Inferred relationship | Existential restriction modifier | 2 | 
| Salmon patch nail | Interprets | True | Color of nail | Inferred relationship | Existential restriction modifier | 2 | 
| Azure half-moon nail | Interprets | True | Color of nail | Inferred relationship | Existential restriction modifier | 2 | 
| Stained nail | Interprets | False | Color of nail | Inferred relationship | Existential restriction modifier |  | 
| Gray nails | Interprets | True | Color of nail | Inferred relationship | Existential restriction modifier | 2 | 
| Nail discoloration | Interprets | True | Color of nail | Inferred relationship | Existential restriction modifier | 2 | 
| Finding of color of nails | Interprets | True | Color of nail | Inferred relationship | Existential restriction modifier | 1 | 
| Leukonychia | Interprets | True | Color of nail | Inferred relationship | Existential restriction modifier | 2 | 
| Muehrcke's lines | Interprets | True | Color of nail | Inferred relationship | Existential restriction modifier | 1 | 
| Hereditary striate leuconychia | Interprets | True | Color of nail | Inferred relationship | Existential restriction modifier | 2 | 
| Knuckle pads, leukonychia, sensorineural deafness, palmoplantar hyperkeratosis syndrome | Interprets | True | Color of nail | Inferred relationship | Existential restriction modifier | 4 | 
| Congenital leukonychia | Interprets | True | Color of nail | Inferred relationship | Existential restriction modifier | 2 | 
| Leukonychia striata | Interprets | True | Color of nail | Inferred relationship | Existential restriction modifier | 2 | 
| Leukonychia punctata | Interprets | True | Color of nail | Inferred relationship | Existential restriction modifier | 2 | 
| Superficial onychomycosis | Interprets | False | Color of nail | Inferred relationship | Existential restriction modifier |  | 
| Leukonychia secondary to systemic disease | Interprets | True | Color of nail | Inferred relationship | Existential restriction modifier | 1 | 
| Drug-induced leukonychia | Interprets | True | Color of nail | Inferred relationship | Existential restriction modifier | 2 | 
| Acquired striate leukonychia | Interprets | True | Color of nail | Inferred relationship | Existential restriction modifier | 2 | 
| Superficial white onychomycosis | Interprets | False | Color of nail | Inferred relationship | Existential restriction modifier |  | 
| Leukonychia totalis | Interprets | True | Color of nail | Inferred relationship | Existential restriction modifier | 2 | 
| Leukonychia totalis, acanthosis-nigricans-like lesions, abnormal hair syndrome | Interprets | True | Color of nail | Inferred relationship | Existential restriction modifier | 3 | 
| Leukonychia totalis, trichilemmal cysts, ciliary dystrophy syndrome | Interprets | True | Color of nail | Inferred relationship | Existential restriction modifier | 3 | 
| Yellow nails | Interprets | True | Color of nail | Inferred relationship | Existential restriction modifier | 2 | 
| Hereditary lymphedema and yellow nails | Interprets | True | Color of nail | Inferred relationship | Existential restriction modifier | 2 | 
| Peeling skin, leukonychia, acral punctate keratoses, cheilitis, knuckle pads syndrome | Interprets | True | Color of nail | Inferred relationship | Existential restriction modifier | 6 | 
| Longitudinal erythronychia | Interprets | True | Color of nail | Inferred relationship | Existential restriction modifier | 2 |