I'm not Avoidant but I have other health issues that impacts my ability to produce art, so I can empathize with your situation. Good luck with everything!

So glad you are making progress! Missed you around here. I hope that everything goes as planned for you :) Also, can we get your tumblr? I wanna follow you :3

I do the same thing [or at least something very similar] with relationships. I feel like I'm a bad friend and don't have anything to offer, especially with all my depression/anxiety issues so I sometimes straight up ignore/avoid people entirely until they quit trying to reach out to me. Then it becomes self-fulfilling. :/ I see the cycle but it's hard to change. You're not alone!

I can really relate to that pressure, and worrying about other people's expectations.
One thing that has helped me to build up my esteem (I still have a long way to call myself confident, but I have come far) is to always remind myself that I'm having a blog/gallery for no one else's sake but my own. This gallery and your Tumblr is your private space. Every time you have drawn something and you hesitate to upload it, tell yourself that your blog is for you. All the people that follow your blog is just a bonus.
At first you might tell yourself this, but still won't upload the picture, and that's okay, it's not failure. Because just reminding yourself that fact is a victory in itself. To act on this fact is another victory that you don't have to win today, or tomorrow or even this year. Because building up like this takes a lot of time and energy, and there is really no point in rushing this.

Glad to hear you're learning about yourself and working toward resolving your issues! I know it's hard but you'll be better for it in the end.

The good thing about art though is that it's impossible to fail. Literally impossible. There will always be someone who genuinely likes a piece. I've seen pieces done by professional artists that look like they were done by a 4-year-old get appraised for hundreds of thousands on Antiques Roadshow. And even more than that, no piece is a failure because it's all practice. If you get a 100 on your 6th grade biology homework, it's a success; that doesn't mean you would hand it in to a research institution.

And finally, a quote I found a bit ago that I've been throwing at all my artist friends with inadequacy issues:
"A flower does not think of competing with the flower next to it. It just blooms." - Zen Shin

Personally, I've never heard of that disorder, and while I've been out of the modern-day loop as far as psychological disorders, I feel like they're honestly just trying to put a label on everything, nowadays.

Point being: I don't think you have a serious disorder, just maybe a bit of self-esteem readjustment to do. A lot of artists go through the same thing that you do; thinking that they aren't good, especially when they really are. Something you have to get set in your mind about art is that everyone has a very different style of doing things, and even if you think you're not good, you might just not like your own style.

I struggled with the same inadequacy feelings about my own art for years, but I stopped posting on public websites for a different reason, entirely. You have to come to terms with the fact that you can only improve from where you are if you keep working at it, and all that progress that you see in others, they can also see in you. People might love every piece you draw, and be even more disappointed that you stop than if you were to put out a few things that you didn't think were perfect.

You have to be the driving force behind your own progress, and behind accepting that even if you see all the flaws in your own work, other people probably won't. In fact, most people in this world don't have nearly as much talent as you have--think of what they might see in your work. The vast majority of people are probably going to see only that you do have a great lot of talent--and anyone who picks apart your work for all its flaws without your permission is just flat-out rotten.

In short, if you don't want to read a bunch of long-winded text, you are always your own worst critic. Don't let it overwhelm you.

Art is not about perfection or accolades or praise from peers. Sure, it's nice to hear "omg this is awesome" but what it really boils down to is art is expression. From a child's fridge-posted crayon doodles to a master's museum piece, it's about expressing yourself and your feelings in a way truly unique to yourself. There are many artists, but we all feel and express ourselves differently.
I understand being intimidated by other artists, but we follow you because we enjoy what you have to offer, be it a super quick sketch or something that took you hours. We miss you when you're gone, and I guarantee you that none of us, fellow creator or fan, think any less of you or your work if something isn't quite 'perfect' as you see it. You have a style all your own and it caught my eye the moment I saw it on FA.

I certainly understand poor self-esteem and self-confidence myself, as it's something I've been struggling with for most of my adult life. It can be difficult not to beat yourself up over things. One of the things that I gradually had to come to grips with is, as Azzy says above, we are our own worst critics. We stare at an image for hours. We see every tiny little flaw, even imagine ones that aren't there, and expect that everyone else will see those flaws too. But art is flawed. Because we're flawed, and we pour ourselves into it. Most people appreciate it for what it is, and those who don't, well, don't worry about them. ;)
Anyway, I'm rambling, I just woke up, but the point is, you have a lot of people who support you and love your work, and we'll always be here when you come back. Hopefully in learning about yourself and how you work, you can figure out how to work through this struggle and keep drawing. I don't know what I'd do if I couldn't draw. I'd be lost.

We're all like that to an extent, Nire. Fear of being judged by others is a normal human behavior, so don't apologize or feel guilty for it. Better to just acknowledge it to yourself and see if you can break the cycle.

The cycle of of producing something, getting recognition for it, then envying others thus getting discouraged in yourself - many people fall into this to an extent, especially artists (of any kind really). A couple times I've given up, took down my galleries, didn't come back until a year or so later when the feeling subsided. I think a lot of us know how it can be.

Agreeing with Inanna Eloah above me; there's no need to apologize or feel guilty over it. I wish you good luck though <33

I know this feeling to some degree, and it is a very hard cycle to break.
But consider that you can create art just for yourself, a secret piece of art made just for you that you can keep all to yourself. Create to make yourself happy, only for yourself. People love your work because you have so much love for the things you create, the beautiful designs and the love for the human(and non human) form that shows in your work.
You have nothing to apologize for, and you are totally wonderful.

I definitely know this cycle. On the brighter side, now that you know that it's happening, you can start building up the tools to help yourself! You can do this! Also, I've always greatly admired your artwork. You're one of the awesome people in my particular book. :)

Honestly to me it sounds like performance anxiety, but I suppose you'd know yourself better than i do!

Hey man, who cares if someone else likes it or not! Art is about expressing yourself regardless of your medium. I like to look at favorites as encouragement to try to improve, but not an obligation because eventually even the best will find their plateau they cannot overcome.
Another way to look at favorites and followers is that it's not the quality they love but something else about the image. I have artists I follow not because their art is exceptionally great but I like their style.
Honestly, while high quality images are pleasing to the eye, I like the images I can feel so much better. The ones that looks like someone did a sneak snap shot of the person when they're in the middle of some activity.
If you want to draw stick figures because it seems like fun or you thought it was funny then by all means go right ahead. None of us are expecting nothing but your best all the time. We just enjoy your theme, method, style, emotionalism, philosophy and more!