Meaning of "worry over"

English as a Second Language English Vocabulary, Grammar and Idioms
1

Dear Teachers,

What does it mean by “worried himself over me” in:

“He worried himself over me, and came forward to calm me in my distress.” ?

2

Hi apo

It basically means the same as “he worried about me”.

Amy

3

That should really be What does it mean or what is meant by.

Art