As fetishes go this one on the surface seems relatively harmless and innocuous. It's about how you are reacting and dealing with it that seems to me to be the issue. You use the words "freak and pervert". What's freakish about it really? Not to give TMI but my spouse of 40+ years and I enjoy sex that includes thongs and other flavors of erotic lingerie.

Seem to me the anxiety and depression sound like bigger issues than the thong fetish. I'd suggest seeing a therapist that works with patients with depression, most of them also can deal with sexual disorders. Sounds like you know this already but antidepressants are notorious libido killers, can cause ED and inability to ejaculate.

Best to you.

Is it normal though to have a specific interest though? I think this might have come about during puberty. As a young guy I remember one of my first crushes wearing thongs and I got really aroused. I might have connected a woman wearing thongs as more confident and sexy or something i don't know. This is the only " fetish " or strong turn on I can think of. I can still get aroused by the "normal" stuff like boobs and butts but if my fetish is involved my arousal is a lot stronger. I fear that isn't normal

As you are not harming another person, this fetish doesn't sound "freakish" or "perverted".

Other articles of female clothing have been the subject of arousal, black nylons and garter belts for example.

Don't beat yourself up, and over dramatize this.

@Lightrail, Spot on!

@OP,
Fetishes are not uncommon and are NOT a sign of being a freak and pervert"!

Stop judging yourself and as Lightrail suggests- get with a therapist and get

yourself off the libido killing AD drugs!