Unless it's nice? I mean...it's ok to say "Oh your hair looks nice" or "I like your top!" or ...perhaps it's ok to say "Oh...have you broken your arm?" if it's in a cast...but you DO NOT comment on other things.
A woman I know...nice woman, very sensible usually...today looked at me and said...."Oh! What have you done?!!" and pointed to my chest where I have a small collection of burst/broken blood vessels. I have pale skin so they do show up but wtf?
Her reaction was the same as if I'd rocked up with an open wound. They're obviously broken bloody veins!!!
she's made me all self conscious about them now. :(