Does anyone know why my scabs look like this?

Hey guys,

So for a few years I’ve been getting these weird scabs on my body that only appear after scratching myself.

The texture of them are extremely flat and are always black in colour, rather than being red and sorta rough like a normal scab. They also never heal unless I peel them off. I’ve literally had one on me for more than two weeks.

Honestly I always thought it was weird but I can’t find anyone on the internet that has gotten scabs like mine. So, I’m very confused.

Below I attached a photo of what it looks like (very small ik) but I’m hoping it’s nothing serious. Around the current one in the photo you can see a few scars of where I’ve had other ones in the past.