Is it normal for a 13 year old boy to have a knot in his nipple?

Answer 1

Breast knots in young males are not uncommon and, by themselves, are generally nothing to worry about. The underlying question here is, of course, could this be cancer? While childhood cancer is thankfully rare, it can occur, so there are some things to look for... * When they appear before age 10 (excluding newborns) and after 15 (especially when puberty is complete). * When they last longer than 2 years. * When other symptoms of illness appear, such as unexplained weight loss or night sweats. * When the lump is larger 1 inch in diameter or seems to spread out in a stellate (star-like) pattern. * When it appears fixed to the skin, or there is dimpling over it. * When the lump appears somewhere other than directly under the nipple. * If the nipples leak fluid, such as blood, clear fluid or milk (yes it can happen in boys). Presence of any of these symptoms is not diagnostic of cancer, but a boy displaying even one of them, should be seen by his doctor forthwith.

Answer 2

A lump under one or both nipples is a common change during both male and female puberty.