If you find yourself:

looking in the mirror, fixating on what you think is a physical appearance flaw,

And then you are:

preoccupied with thoughts that all other people will see are your flaws, And you start to:

feel embarrassed, ashamed, or self -critical,

And this leads to:

engaging in compulsive behavior like mirror checking, skin picking, seeking reassurance, camouflaging (trying to cover up disliked body areas)- then you may have Body Dysmorphic Disorder (BDD).

Read below why it is important to get treatment for this under-diagnosed and under-recognized disorder.

https://bdd.iocdf.org/about-bdd/why-should-you-get-treatment/