Thanks putting your query in HCM
It appears that you are suffering from Dandruff
. The doctor gave you the right prescription. Some times you have to eat oral antifungal
for better effect.If itching is too much you can have an antihistaminic.
When you use any antifungal shampoo you have to let it remain on your hair and scalp
for at least five minutes then you should rinse it off.initially use it twice a week and then weekly.
your comb should be washed with soap and water and dried before use 'Each Time'.
You should eat a suppliment eg Cap Adgain
once daily. Also eat plenty of fruits and vegetable ie healthy diet. Please do not worry too much as stress
will also have detrimental affect.
If this still doesnt help you please consult a skin specialist.