Baby acne is small, inflamed bumps on a baby's face, neck, back or chest. It often develops within 2 to 4 weeks of birth.
Many babies also develop tiny, pimple-like bumps on the face. These harmless spots are called milia. They disappear on their own within a few weeks.
Another condition that might be mistaken for baby acne is benign cephalic pustulosis (BCP), also called neonatal cephalic pustulosis. A bad reaction to yeast on the skin causes BCP.
None of these conditions is caused by the type of bacterium that causes acne in teens and adults.
