What’s it called when you obsess over things?

[Anonymous]

I’m trying to explain to my partner what it’s called when u obsessively think things. Like for example sometimes he will say something to me and I will repeatedly all day think about it and obsess over it if I’m concerned and I get anxiety. Or sometimes il have to say things 5 times otherwise I think something bad will happen and I can’t recall what it’s called is this a mental health condition? I know I can use google but in terms of dating this happens, or if I feel like my partner isn’t being perfect I stress out so much and need certain routine

[Paul_in_Indy]

“Obsession” is the word for obsessing over things.

[KnewHOUSE]

Paranoia , that all that is you need to go to church more if you think your a cures.
Maybe you should be me.. then if you think that stuff.

[bigrook]

Its called "perseverate".

[Flower7]

Obsessive Compulsive Disorder (OCD)