My storry with Seborrheic Dermatitis

I am a 17 year old male who just recently was diagnosed with SD. My whole life i had vibrant beautiful skin until Acne hit. I got scared and immediately took action with this Acne drying out paste you put on your face. my Acne no longer were just a couple zits but turned into groups on my forehead and chin. i moved to proactive. this didn't help and caused me to get a red rash around my eyes the day after (i would get it after sun exposure). i quit that and moved on to the big boy stuff. i called up my derm and he soon put me on a topical called ziana. this cleared up my face completely leaving me with no zits. being an idiot i overdid the ziana on my face and even went into the sun with it on. my face soon for the first time started to become red. the redness stayed around my cheeks and would not go away. i was told i had an allergic reaction with the product. i started getting very hot in my class and getting comments about how i looked like a tomato. i no longer got wow your so tan (i surf a lot) but wow your so red. the acne no longer mattered but the redness killed me. i went off ziana and the red hott flashes left but the redness around the cheeks stayed. i was off all acne stuff for a while then went on minocycline because i couldnt take having acne and being red. the minocycline cleared most of my acne and my face started getting tan again still a reddish tan but i was no longer getting burnt. i stayed on this for several months thanking god that finally the redness had left. i went off it because i knew i couldnt take an oral medication for that long. i started to get very very oily at parts of the day, the redness came back in my cheeks and i had dandruff. i went to a derm again (this was the 4th one) and he told me i had SD.i thought i had gotten rosacea but nope it was SD. he put me on ketoconazole shampoo. i also went to a homeopathic docter who told me i had liver damage from the chemicals. i quit eating all dairy sugars and wheats. the redness is staying please please help me. i am scarred to go to school and even talk to a girl. any advice will help thankyou and God Bless