Discolored or thick nails

DDx

  • Onychomycosis (tinea unguium)
  • Psoriasis
  • Keratoderma blennorrhagica (with reactive arthritis or Reiter's syndrome)
  • Crusted (Norwegian) scabies
  • Lichen planus
  • Allergy to nail polish or nail glue

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Last updated: December 1, 2014