I just want to mention that Ketaconazole cream is good because it doesn't break you out. Prior to Ketaconazole I used some other cream (forgot the name) which did work, but at the same time caused little pimples on my nose and cheeks.
I have seborrheic dermatitis, and I hate it. Sometimes I confuse it with acne. I currently control my seborrheic dermatitis with non-steroids Ketaconazole cream. How I ever developed seborrheic dermatitis I will never know, but it sucks to have it.