Is this Derealization?

Hello,
I am quite familiar with both derealization and depersonalisation, I used to get them a lot during my anxiety/panic/OCD attacks or simply when I was stressed. The symptoms were "classic", I felt as if everything around me was strange or like in a dream.
But recently I started feeling weird towards other people. It is very difficult for me to describe this feeling, because it's very abstract. It is similar to derealization: sometimes I look at a person (usually someone close to me, or someone I spend a lot of time with) and something about them feels off. It's just really bizarre, it's as if "something is wrong", but I can't point out what exactly. I feel like they look strange to me, but not in such a way that I don't recognize them anymore, just the general feeling of them being like strangers.
This actually only happens to me if I am with the person in a public place that may be crowded (like the supermarket). Usually when I go out with my mom. We live together, and it's almost as if my brain is used to see her in home environment and feels weird seeing her outside... as funny as it sounds. And I often feel overwhelmed and anxious in public places, so maybe it's connected with my panic and anxiety. What do you think?

This happens to me and I was wondering the same thing. Only it happens when I'm focusing on one person sometimes for a long time. Usually sitting and staring straight at them. They start to look disjointed, like their arm looks like it's wierdly attacked to their shoulder? And I am looking at them through almost a kaleidoscope or binoculars. Is that what you are talking about?

Usually When this happens I can hear myself very well and start trying to calm myself down and act natural and find a way to understand what is being in said in the conversation.

Has anyone else experienced this?