There are many types of early relational trauma, but I strongly recommend the (audio)book: "Adult Children of Emotionally Immature Parents: How to Heal from Distant, Rejecting, or Self-Involved Parents" by Lindsay Gibson, to anyone who thinks they might benefit from reading a book with that title.

I get that's a weird judge-a-book-by-its-cover metric, but it is excellent for working through and understanding those relationships.