Skin troubles that suddenly appeared even though it wasn't summer

As the title suggests, I'm stressed out because I've been having frequent skin troubles even though it's not even summer. I haven't changed any cosmetics, and I'm still using the same skincare products I've been using. But I keep getting one on my chin and cheeks.

It doesn't hurt too much, but it lasts a long time and is annoying. It's not a painful, purulent discharge, but rather a slightly thickened, raised feeling.

Because of my skin troubles, I'm extra careful about washing my face and try my best not to touch it, but it just won't go away. If I don't get enough sleep or eat a late-night snack, it shows right away. So these days, I'm just trying to stick to the basics, not putting on too many products, and trying to be as light as possible.

Once I have a skin problem, it seems like it keeps reappearing in the same spot, which is even more stressful. I'm curious how everyone manages this. Is it better to go to the hospital or is it okay to manage it at home?