I am a 20 year old diagnosed with GERD & Barrett's esophagus that resulted in Achalasia. AMA.
During high school I began to have terrible acid reflux anytime I went to lay down. Although undiagnosed at the time, I had GERD. One day I tried eating chef boyardee and a meatball got stuck in my esophagus and ended up regurgitating it a moment after. Soon after, I would have days where I couldn't even swallow my own saliva.
I finally ended up at the hospital where, after some tests, they confirmed my condition and not only informed me that I had Achalasia, but that my esophagus in general was the smallest he's ever seen. They stretched it once with a balloon dilation that provided some relief, but it eventually shrunk again.
2 years after I had another "attack" where I couldn't swallow anything and had another dilatation done. This time, they told me that I had a hiatal hernia and Barrett's esophagus. Originally, they were going to try a botox injection to relax the muscle and let food pass, but after the endoscopy, they realized that the tissue was so scarred and hard that it was impossible and opted for the second dilation instead. It was less effective, but enough that I could swallow again.
These days I still eat the same foods I used to, but with an exhausting amount of chewing and a LOT of thin liquids to push it down forcefully. I still end up over the toilet more than I'd like to, but have learned tricks on how to control my swallowing better.
TL;DR I have a naturally thin and scarred esophagus that inhibits me to swallow food easily
EDIT: Well looks like that's a wrap! I didn't really expect to get more than maybe 15 questions. You all have really started motivating me to finally take care of my condition before it gets worse, so I definitely appreciate you taking the time to comment. And to those suffering from the same issues, I wish you luck!