My Son (20 year) is look very skinny, not look mature even he is in 3rd year engineering He is not look like 10th student. I think he suffering from delay growth. His weight is just 39 kg. He is smaller than me. My height is 6'2. His hand wrist and organ are also small. His penis is also smaller like 2 inch. I think his growth is stopped due to his studious behaviour and low body weight. Which doctor should I consult him for proper growth. I am living in mumbai city. My family doctor suggested him testoki tablet but it cause acne so he didn't like to consume it. Can you suggest me good medicine.