Hi, My fiance has a skin condition that has progressively gotten worse over a span of 4 years. It started really small in the middle of his sternum and it looks like psoriasis but its not really scaley or silver. I dont have a picture right now but it has gotten over his chest, upper back, neck and going into his hair line. I don't know what it is and he's scared it's cancer. What do you think it is?