Hutchinson's melanotic freckle melanoma associated with Melanoma risk is twice as high in Parkinson's: A call to counsel every person at every visit Parkinson Secrets 05 May 03 Eng Pediatric Soft Tissue Oral Lesions Dental Clinics Longitudinal melanonychia often misdiagnosed and confused with melanoma. Signs that need to be seen while examining this nail condition 1 Hutchinson sign : the extension of brown black pigmentation from the nail bed matrix Oral melanoacanthoma and oral melanotic macule: a report of 8 cases, review of the literature, and immunohistochemical analysis