Increlex

My 15 year old son has grown 3 inches since taking Increlex for the past year. An unexpected side effect is that my son's usually light brown, straight hair is now dark brown and curly.

My 15 year old son has grown 3 inches since taking Increlex for the past year. An unexpected side effect is that my son's usually light brown, straight hair is now dark brown and curly.

I am 14 and take 15 CC's of increlex a day. Before I took the medication my hair was smooth and striaght. But, after about a month I noticed that my hair was coming in frizzy and curly. Because I am of Asian decent, it is very unlikely that I would naturally have curly hair. My doctor says that my hair change is because increlex makes all cells grow and sometimes unevenly. So because of the uneveness off my cell growth it gives my hair this appearance.

I do not know much english but I can read.
My son is 9 yrs old and he use increlex. Last week, he has on his body skin like dry skin on his stomach.I want to know if is it a side effect for the increlex or is it a skin problem and he need to see a specialist (dermatologist)?