Hi, I had persistent angular cheilitis for 7 years until I took a double-dose course of vitamine B complex and it never came back (I'm AC free since last october). As for EC, mine only got better with a better diet and lifestile, but never cured it..unfortunately. So mu suggestion is to take B vitamins and to limit sugar, gluten, milk and junk food.
Luca

Could easily be something that you're consuming that your body is denying. Try Elimination Diets , starting with what you consume the most of. Try to keep your lips hydrated. Stay away from petroleum,vaselines, alcohol, excessive amounts of sugar, nicotine.

All of these can be bought on AMAZON com. The first 3 are the most important.

Purchase a hydrocortisone chapstick(1%)Dr. Dans Cortibalm works great and DO NOT apply more than 3 times a day. Also purchase Califlora Calendula Gel. Its perfect for healing and when your lips peel, they heal up way faster and feel better also. Last but not least purchase an organic chapstick like TREAT Coconut Cream Lip Balm. Its 100% organic and works wonders with moisturizing without much shine.

My method is based on 5-6 day peeling cycle. Used to be 2-3 days with much bigger chunks of skin than I have coming off now and very inflamed lips.
Once I wake up I take a shower and brush at the same time. After that I make sure I immediately pat dry my lips and wait a few minutes to wither peel off some loose skin with a small nail clipper (in the mirror)or apply Calendula. Either way, apply a good amount of Calendula. Wait a minute then apply the hydrocortisone by patting it on(not too much) because you still have to put on the Coconut Cream Lip Balm. Put on the Coconut Cream Lip Balm( a good amount) and you're set. Leave it on for at least 5 hours before you let it come in contact with any water. At night do the same thing but apply a little more hydrocortisone because thats when your lips will heal the most and they tend to become inflamed at night time. Remember do not apply it more than 3 times a day.
Toward the end of your peeling cycle, use less and less hydrocortisone. After a month I guarantee you will see the results. Use less and less hydrocortisone each week after, it can start to affect your lips with excessive use.

Other things that helped were THORNE RESEARCH- Stress B Complex for Adrenal Support and Stress Management(2 a day before bedtime but after a meal.)
MUSCLETECH PLATINUM - 100% Fish Oil.
Gym for stress. Go for at least 1hr15min and never look in the mirror when lifting(but be sure you're lifting correctly and get at least 10min or cardio.

This disease or whatever its classified as will not break you. I'm black with a narrow face and already big lips and this made them bigger, more inflated, disproportionate and unsightly. But it will make you mentally tough like a linebacker. Keep doing your thing. I went through some really tough bullying and trash talking. Trust me, sign up for the gym and kill it, it helps with stress and you'll be a beast. I've gained 30lbs of muscle in 4 months. I now view this as a blessing that got me off my lazy ass.

Good luck boss