In most cases, when white spots
appear on a single or a couple of fingers or toes, the most common cause is injury
to the base (matrix) of the nail. When this is the case, white spots disappear after around eight weeks, which is the amount of time necessary for nails to regrow completely.
White patches (leuckonychia ) can also be a result of trauma, arsenic lead and heavy metal poisoning
An occasional white spot is usually evidence that the immune system overcame a bacterial or some other systemic infection.
CONSULT AND SHOW YOUR DAUGHTERS NAILS TO YOUR DOCTOR TO KNOW EXACTLY WHY THAT PATCHES ARE THERE.