Picture of Leukonychia Striata
Leukonychia striata are white streaks that appear on the nails due to trauma, manicuring, or certain systemic diseases. Often, the cause of leukonychia striata cannot be identified and the white streaks resolve without treatment. Some cases of leukonychia striata are inherited.
Text Reference: "Leukonychia Striatica." Washington Manual of Outpatient Internal Medicine.