Suggest Treatment For Severe Dandruff Spreading To Eyebrows

hello my name is ali and i am 18 years old i have a lot of dandruff in my head i have tried many treatments and anti-dandruff shampoos but it won't go away and it has started spreading it is coming into my eyebrows and behind my ears i fear it's eczema what do you guys suggest i am really worried...!!! please reply as soon as possible