Is Body Dysmorphia Disorder related to OCD or are they completely different disorders?

Can OCD mimic depression? With this theme I’m always wondering if I have OCD or depression. It first started out as harm OCD and now this. Today I told myself if I did have depression then it’s treatable and I would work on it. Then I started to feel depressed and emotional and like had an urge to google the difference. When I did this I just broke down because I felt like I related to them, it made me worse. However when I look up OCD symptoms it makes me feel better. So now I’m unsure. Almost like OCD wants me to believe it’s depression

OCD is so much more than just being 'neat' or 'organized'—it’s relentless, exhausting, and often deeply misunderstood. The intrusive thoughts, the compulsions, the anxiety—it can feel like a never-ending cycle that others just don’t seem to get. Many of us have had experiences where even therapists didn’t fully grasp the depth of our struggles. I myself faced difficulty being misdiagnosed and my talk therapist not understanding the full extent of what I was going through until I found NOCD. So many prior therapists wrote off my symptoms as general anxiety, not realizing it was actually OCD all along. If you could sit down with a therapist who truly wanted to understand, what do you wish they knew about OCD?

Why do some people develop OCD?