5 doctors weighed in:

What are the firm lumps under the nipples on a 3 week old?

5 doctors weighed in
Dr. James Ferguson
Pediatrics
3 doctors agree

In brief: Moma's gift

The fetus develops in a system that uses maternal hormones to guarantee the environment is nurturing.
As long as the baby is hooked to the placenta, any maternal hormones that pass into baby are kept at minimal levels. When delivery occurs, any remaining hormones will not be removed, and contribute to baby acne and breast tissue in both males and females.It peaks and fades by 3-6 mo in most.

In brief: Moma's gift

The fetus develops in a system that uses maternal hormones to guarantee the environment is nurturing.
As long as the baby is hooked to the placenta, any maternal hormones that pass into baby are kept at minimal levels. When delivery occurs, any remaining hormones will not be removed, and contribute to baby acne and breast tissue in both males and females.It peaks and fades by 3-6 mo in most.
Dr. James Ferguson
Dr. James Ferguson
Thank

In brief: See below

Those bumps are breast tissue.
This is a result of maternal hormones, and they will resolve.

In brief: See below

Those bumps are breast tissue.
This is a result of maternal hormones, and they will resolve.
Dr. Anthony LaBarbera
Dr. Anthony LaBarbera
Thank
Get help from a real doctor now
Dr. Cindy Juster
Board Certified, Pediatrics
32 years in practice
2M people helped
Continue
108,000 doctors available
Read more answers from doctors