Anxious Attachment
Related terms that get used almost interchangeably, though they're not quite the same.
These two terms circulate together so often that people tend to assume they mean the same thing. There's real overlap, but they come from different traditions and emphasize different parts of the pattern.
This comes from attachment theory and centers on fear of disconnection, reassurance-seeking, and hypervigilance about relationship stability.
This term comes out of addiction and family-systems work and centers more on identity and self-worth becoming tied to being needed, caretaking, and difficulty prioritizing your own needs even when the relationship is unhealthy.
In practice, a lot of people show both, since fear of disconnection and identity built around caretaking often develop from similar early experiences. Naming which parts show up for you can help clarify what the work actually needs to focus on.