I have psoriasis. It started when I was about 17 and got really bad whilst I was at uni. It burned and bled and I had to spend hours in the bath trying to soak it off. I felt so self conscious. About a year into uni I got a belly button piercing, because I really wanted it and felt good about myself. Inevitably the skin around it went bad. One of my friend's flatmates stared and stared at my belly one day, he wouldn't stop and eventually told me how gross it was and looked absolutely disgusted. Like I had any choice?! I've also had people recoil in horror and refuse to shake hands. My partner once got ringworm because his house was so filthy and damp, and said it was because he'd caught my skin disease. He knows perfectly well it's not catching but it still hurt like hell.