Hutchinson's sign; periungual pigmentation

Etiology

• pigmentation of the fingernail (brown nail) also involving the proximal nail fold is suggestive of acral lentiginous melanoma
  • melanoma until proven otherwise

Clinical manifestations

• brown-black discoloration of the proximal & lateral nail folds
• brown-black pigmentation of the nail matrix, nail bed & nail plate obliterating the lunula
• nail plate may show dystrophic changes

More general terms

• sign/symptom

Additional terms

• Hutchinson's teeth; Hutchinson's incisor; Hutchinson-Boeck teeth
• Hutchinson's triad