This is probably going to be very long but here I go.
I have always not liked the sound of chalk squeaking on the blackboard, or when the windscreen wipers squeak, also the look of when gloves have been turned inside out and the fingers haven't been pushed out. I had a big melt now not that long ago. I was on Facebook and I came across this photo of someone's back and it was this weird growth thing and it said it was from using dove shampoo. It really grossed me out because it just looked really off putting. I instantly started feeling really uncomfortable and I started imagining that it was on me and I wanted to get a knife and cut into my back (not that I would have done that) but it got really bad and it really did feel like it was on me, I started unintentionally digging my nails into my leg and rubbing my hands. From there I started getting really frustrated that I couldn't control it and I was getting cold shivers. I got really worked up ans had to just sit down and listen to some calming music it took two hours for me to be back to normal and the next day I was trying to keep myself busy because every time I thought about it, it was almost like it come back onto me. If i saw the picture again the same thing would probably happen. So my questions are. What does this mean?, Is it a mental illness?, And How can I control it?