Well, it’s not that uncommon in boy that age to experience
first erection. The problem is that they don’t really understand what is
happening to them. They can be afraid of things that they do not know. Problem
can occur if your son has adhesion. This can be painful in first erections
because skin between penile shaft and head of penis are not used to this. I’m
not really shore about the hernia correction, having to do anything with this.
You should talk to your doctor about this.
Is there any inflammation on the skin of the penis? Does it hurt him when he is urinating?
However, the best thing is to talk to him and explain about erection.