Posted by Pam "SFSOM" in MD on 23:13 Jun 28
In Reply to: Boys + puberty = some sore breast tissue. Right??? Tell me your sons had this & its normal. posted by House of Puberty
... an estrogen surge. In a couple of days/weeks, the testosterone surge will mask this completely.
Be ready for his emotions to get, well, emotional.
This is similar to what little babies get when they're born and the risidual wash of the mom's hormones gives them swollen breast tissue.