Table 2 Rare, usually work-related, local toxic causes of yellow nail discoloration, from [90]
| Epoxy systems: metaphenylenediamine, 4,4′-methylenedianiline |
| Flower handling |
| Pesticides: diquat, paraquat, dinitroorthocresol, dinobuton |
| Chromium salts |
| Dyestuffs: dinitrosalicylic acid, dinitrobenzene, dinitrotoluene, trinitrotoluene |