Mees Lines (horizontal White)

Etiology

  • Injury to the nail matrix

Risk Factors

  • Associated with renal failure, arsenic poisoning, heavy metal poisoning, chemotherapy

Symptoms

  • Lines move distally over time as nail grows out

Physical Exam Findings

  • Multiple white horizontal lines
  • Can be one or multiple nails
  • Can extend across entire width of nail
  • Lines dont diminish w/direct pressure to nail plate