Hutchinson Sign (Nail) Hutchinson sign refers to the spread of pigment from the nail bed or nail plate onto the adjacent skinspecifically the proximal nail fold or lateral nail folds. Why it Acral lentiginous melanoma or Hutchinson's melanotic freckle of the extremities a case report Solitary pigmented lesions in oral mucosa in : Pediatric Dermatology Lentigo Maligna Melanoma: Overview, Etiology and Pathophysiology, Epidemiology Biology and Pathology of the Oral Cavity Plastic Surgery KeyPlastic Surgery Key Oral Melanotic Macule: Symptoms and Treatment Skinsight