My son is 12 years old and of 4' 8" tall studying in six. His penis is not growing according to his body growth and comparatively smaller than his friends of 12 years old. His penis is approximately 2 inch long in erected state while less than one inch while in flaccid state. I'm very much worried about his future. Should he be put under medication for proper growth of his penis. Kindly suggest me that doctor of which department should be consulted for this problem for ex. Urologist or Paediatric Endocrinologist. For your kind info, being his father now my penis is 15 c.m long while erected and also I had comparatively bigger penis than my son when I was 12 years old. Please help.