I have Multiple Sclerosis, it is both really bad and not so bad. I was never really scared of the disease, however it is now a gigantic part of my life messing everything up. My parents are rather comcerned and they have spent hours upon hours of searching for alternative treatements as they don't trust medicine as much; you can imagine me, striving to be a scientist, arguing with them forever and ever about it, that's where the problem lies. I've accepted 1 alternative treatement just to have peace honestly under the condition it is not dangerous of course.
Regarding the depression; I was fighting depression my whole high school, since I had no one in class who would be extremely curious or anything, I had no one to truly talk with and even though I was quite social, I was often seen as a weirdo and autist by my peers, that's why I am now overly obsessed over what my peers think. I also had a productive way of escaping, I was programming all the time, developing games, it was super fun because of algorithms and math, but it also felt useless.
I love physics and math above everything else, I have great friends and all but no one understands just how important physics is to me, they all say that I work too much and that I should just chill and enjoy life. I have also never met a girl that I could talk with normally about anything, ypu see I love music, literature and philosophy as well, all people these days can talk about is social media, boring parties and the "fun" stuff they did. I love my friends, but you can see that no one really understands.
Lastly, I love your suggestion to get lost in the books, I do that when I can, however my brain is currently weak in terms of willpower, so I tend to get distracted very quickly, computer and phone are much easier alternatives to reach for, but I am doing everything I can to get rid of the distractions. I cannot drop classes here, It's not like in US, also I fell behind because of the stress and escapism and now I am desperate to catch up, seeing other students working hard and being good st it; it makes me even more depressed.