Well i'm currently under ayurveda for the past 15-20 days and there is an apparent improvement but not fully sure about that . Basically i have stomach and liver issues but i suspect its more of a liver issue. I don't wish to name the medicine that i'm presently taking as i want to see if it realistically work. Applying creams did't work for me as it did't for most of us here.
Hence it quite clear that its not a local skin issue, somethings wrong inside. I urge you to address that. if you think its vitamin its possible because vitamin-a in excess causes EC. Don't worry you'll be alright unlike most of the people in this forum did't address their EC issue until it was too late. Most of them did't realise that this was a skin ailment until 10-15 years. and most of them have it due to excess biting and constant licking. I'm not saying they won't be cured but it'll take a little more time for them as opposed to your case.
I think you are gonna be alright if you have some resilliance and perceiverance. Dont eat junk food, smoke, booze, red meat etc. eat healthy, drink juices both veg and fruit.