Common: Many babies have this, especially if the skin is naturally more dark.
Answered 3/18/2013
5.2k views
Normal variant?: Linea nigras are usually seen in pregnant women due to estrogen stimulating melanocytes stimulating hormone. In children i would suspect it is a normal variant. However, there have been reports of adrenal insufficiency being present in children.
Answered 3/9/2017
5.2k views
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