It needs to be: Checked by a dermatologist. A malignant melanoma of the nail bed is the not the only reason for this. Doubt it is since there are multiple black lines on nails.
Answered 9/11/2013
4.9k views
See dermatologist: In a 12 year old, this is unlikely. However, anything can happen to anyone at any age. Please see a dermatologist who is a doctor specialized in skin, hair, and nail diseases. The doctor may want to do a biopsy.
Answered 9/1/2013
4.9k views
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