Scalp Eczema, Bumps On Head, Medicated Shampoo

my son is 9 months old and he is suffering with eczema for the last few months worst thing is on his head ,he itches his head alot including his forehead and eyes and even there are oozing bumps on his head which are very painful and can t let him sleep i ve been using medicated shampoo prescribed by my G.P since two months but nothing seems to work ...desperately need help my son couldn t sleep at night ...help me plz