I’m so sorry you were bullied too and it has made wearing short sleeves impossible. It takes time to get comfortable with your body after others have verbally degraded it so much. I used to never wear anything but crew neck tee shirts and shorts that were knee length and always wore my hair in a ponytail. The people in my school picked on the fact that I had larger breasts and hips for my age. It took until college for me to start to see big changes in my body image and wardrobe. It’s a great start that you are recognizing they bullying made you not want to wear short sleeves. Definitely talk with a therapist about it all. I hope this helped

i’m the exact same way! i had (have, but it’s less noticeable) keratosis pilaris on my arms (just the lil bumps) but in elementary school i’d get asked about it so much that i stopped wearing short sleeves; i’m 22 now and i still only feel comfortable wearing long sleeves in public. it’s such a weird mindset because i know exactly what the problem was and that i don’t have it anymore, but i’m conditioned into only feeling safe when my arms are covered. i’m sorry that happened, but you aren’t alone in that feeling