This is almost certainly a skin infection caused by a bacterial infection with bacteria called staph. It is either a condition called the scalded skin syndrome or neonatal pemphigus. In the latter case the dermatologist sometimes wishes to be sure of the diagnosis by taking a very tiny skin biopsy. This is definitely not due to cancer.It has nothing to do with the mother taking anytibiotics during pregnancy. The skin condition responds very well to treatment with antibiotics.
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