they are probably not warts. i suspect your child is more likely to have molluscum contagiosum. these can be treated in several different ways other than just ignoring them. ask to see a dermatologist if the pediatrician will not treat him.
my 4 yr old has warts all over her body which her doctor said was common in kids & will go away in 18 mos over 2 yrs ago. what are these warts called and how can we get rid of them? she is digging at them and they are getting infected.