SD became active around Jan/Feb 2014, didn't really focus on it until 6-8 months ago. I started at the gym in May 2013, on a bulking cycle that went for about 6-7 months. At the start I was eating normal and healthy, then junk food made it's way into my diet plan. Over time the clean food/junk food consumption fluctuated, but gradually went downhill. In late December I started a cutting routine which cut my calories, and I was eating more healthy. Towards the end of Jan I had an intimate relation with a girl I really liked, but things happened during it that sent me on a downward spiral for the next 8-12weeks (I think - I'm not sure how long it went for). During this "down" time, I stopped training, ate bad constantly, started smoking again, and just had such a negative, low mindset that I really couldn't do anything about, but let it run it's course. I think there was a period there where I ate junk food exclusively for about 4-6 weeks, and I'm talking 3-5 meals a day. Also during this time, I was aware of something happening in my midsection area. I really can't explain it, but I feel as though I was going through some sort of physiological change within my body. It was a weird feeling, but it didn't hurt or anything, so I forgot about it. Then the seb derm came. Time went by, it didn't go away, creams and washes didn't fix it, so I went to Dermo to see what's up. He diagnosed SD, told me I couldn't get rid of it, and then not much else after that. He gave me a sheet of paper with treatment solutions and wrote some stuff on the back, and that was it. I felt like I wasted $160, but I needed the diagnosis at least. Anyway, you're on your own with this one. They don't know what causes it, or how to fix it. I didn't (and still can't) really accept that. I learnt after awhile that the inflammation is an immunological response from your immune system telling you that something is not right within. Now, I've always had crap skin - I've had flakes from my hair since high school. My skin would develop rashes in certain places at certain times for certain reasons. But this is different. This is my immune system.
In summary, this is my theory about what has happened:- Bulking diet was good at the start, then went slowly bad to really bad. An accumulation of food toxins and bacteria residue could not properly be processed and filtered through my system creating overgrowths of bad gut flora and yeast and whatever else there is in there. From here I think I have massively overloaded my digestive system and related organs to be not functioning at their maximum capacity. Add in a couple of months of depression and there you have it - a recipe to make Seborrheic Dermatitis. I have another theory as well, that no two people are the same, no two people go down the same path to developing SD, therefore, no two people will be able to control, manage, and hopefully eliminate the underlying cause of this condition. But what is the same amongst everyone who has SD (and I can't really speak for sufferers of other skin disorders), is that there is an issue(s) with their digestive / Immune system. It could be genetic, allergic, trauma based, etc. I believe some can correct the issue, I believe some can't. I do get down about it, but someone said to me that "If you get through life with just that, you've done pretty well", which makes me appreciate the things that still do work with my body. It's still hard though.
Well that's my story, I'm happy to be a part of this community, and I think this is one of (if not, the best) website out there, regarding SD. Thank you Michael for what you are doing, and I want you to know that I thoroughly appreciate your efforts in the fight to cure SD!!!