My grandma actually had something similar about 40 years ago. I havent really asked her much and she doesnt know all the details. She basically had scabs on the outside and inside of her lips that took a long time to heal. I believe they cracked when they were dry and bled and formed new scabs. Nothing wrong with her lips anymore. I dont think it was EC.
My mom has a really good friend in China, whom I recently saw, and Im pretty sure had EC. Shes been picking at her lips for I'd say a good 30 years. Still did it when I saw her recently. I didnt ask her about it, but what else could it be?
Ive never heard anything about water causing EC. I know water can cause peeling skin to turn white. Im pretty damn sure I have EC. I have the peeling cycles, corn flakes. The only thing I dont have are the yellow slime or whatever. And the skin isnt as thick. Its really thin actually, but my EC started getting bad around last year. I only remember that I used to pick at my lips a few years ago. Didnt think much about it until I realized I had EC.