This is most likely acne. It may not seem like it but there are all kinds of acne, as it is a skin disease, not just a "teenage occourance". Do not bother with it, but buy yourself some topical acne medication in preperation.
Fluid-filled red bumps that occur on the back, between the shoulder blade area, could be one of two things. They could be body acne or cysts.
They say that the whole population of the world could fit onto the Isle of Wight standing shoulder to shoulder.
That is normal puberty could for him around 16 it is nothing to worry about
A wet dream is a sign of puberty which means you could have kids, but you don't have to have a wet dream. If you know you have gone through puberty you could have kids. Wet dreams are signs of puberty. Get it??
No, but a severe blow to the testes could effect the process of puberty.
No. Everybody hits puberty at their own rate, so you and your twin could hit puberty at entirely different times.
It Can Be If You Started Puberty Late Or How Fast You Puberty Is So Your Puberty Could Be Slow But It Is Nothing To Worry About Yet Give It Time To Grow
It can actually happen and there have been cases of it, but generally it is not until 11 or 12 that puberty starts.
You'll have pain when moving your shoulder. The injury could worsen and nerve damage could be possible.
This all depends on how far into puberty they are. It could be 1.5 inch if puberty not started.
It could be puberty.
There are 2 different things that could be happening if your son is feeling pins and needles after hitting his shoulder. He could have a dislocated shoulder or he may have a pinched nerve in his shoulder or neck.