Hello Doctor, I have a 7 and a half year old daughter whose nails are turning black slowly.i can see these changes in her left foot toe nails and her little toe finger nail is completely black? what could be the possible reason She is a fussy eater and does not consume healthy food overall. kindly help. Thank You

A. Ma’am It would be very difficult to comment on it so if the choices are to either you first consult a skin doctor to know as to what is going on there anyways have much of an expertise in this area as you can take guidance from your treating doctor as well because without assessing it would be very difficult to suggest you the right thing