SD victim in need of advice

I'm a 21 year old male that has the dreaded seborrheic dermatitis(red sometimes itchy patches the appear on my face/scalp) which is where nobody wants this problem. I have had this problem since I was around 18 years old. I also have the worst skin type ever my skin is so oily most of the time but dry just as much as it is oily it makes no sense to me. I'm a very healthy, active person minus the fact I do dip tobacco which I am in the process of quitting as I type this article. I don't know if nicotine could play a role in my SD or not that's why I wanted to write this. Mine comes in very weird intervals. One day my skin might be so clear and look great and I've actually gotten comments on my skin before then In less than 24 hours my face can look like a chemical reaction. Usually I can keep clear skin for months without a breakout that's how it has been for atleast four years until just here recently I'm having break outs atleast every other week and in desperate need of help. I'm not eating/taking anything out of the ordinary. I can't even drink at the bar with my friends because I've found a for sure connection with SD and alcohol which is extremely depressing to me I'm 21 years old and can't even drink a beer or two with my buds. It stresses me out as well which I know doesn't help at all. I feel like a doctor as I have researched SD non stop for four years now. I have tried it all. Apple Cider Vinegar I thought was my 100% cure even tho it smells like something dead. It used to clear me up overnight it felt like. I used that for the past two years until recently it does nothing but irritate my skin. I've been desperate for a cure so I went back to the ole faithful cortisone 10 which you can't use ALL the time because it will have side effects with extended use as I've learned. I just started a vitamin b6 and vitamin C regimen as I feel like I'm deficient in a vitamin or something because I know my gut is the cause of this. I'm in college with so many friends and loving life so much at the moment I just can't imagine how great it would be without SD!! No worse feeling than missing out on an event ( cant count how many times this has happened) or when an extremely beautiful girl wants to go on a date and All I can think about is how awful my face looks when a week ago it was clear. Those are my problems in life at the moment! Not complaining what so ever I thank God everyday for my great health Im just in desperate need of help right now. I just need recommendations on anything that helped you tremendously. Keep in mind my skin type as well. Thanks Tweet