Primary amyloidosis-induced nail dystrophy

William Tausend, Megan Neill, Brent Kelly

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


Primary amyloidosis is caused by a monoclonal proliferation of plasma cells and is capable of producing cutaneous lesions. A 56- year-old male was admitted to the hospital for evaluation of chronic back pain and acute lower extremity weakness. On examination, he was noted to have subungual verrucous plaques with overlying nail dystrophy on his bilateral thumbs. A biopsy of one subungual lesion showed a deposition of amorphous material in the dermis that stained with Congo red and crystal violet. These cutaneous lesions ultimately led to the diagnosis of plasma cell dyscrasia and primary amyloidosis. Based on the literature search, primary amyloidosis presenting with this degree of subungual thickening and overlying nail dystrophy has not been previously reported.

Original languageEnglish (US)
JournalDermatology online journal
Issue number1
StatePublished - 2014


  • Nail dystrophy
  • Plasma cell dyscrasia
  • Primary amyloidosis

ASJC Scopus subject areas

  • Dermatology


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