My mother and father have noticed that my neck is very dirty. I proved to them one day that my neck is like that by letting them wash my neck with rubbing alcohol. Now I may admit that sometimes I do forget to wash my neck,but I am starting to freak out about my neck. I looked up my neck problem and it stated that it could be insulin resistance.I wanted to cry. All my life I've been chunky,and my grandfather was a diabetic, so I started to get scared.Because both of my parents are chunky,I may be diabetic or close to it. I told my mom and she said that I have to go to the doctor. I begged her no,for I didn't want to know my weight.I researched again and they said the diagnosis could be 'acanthosis nigricans'. I am on a diet now,but my mother also said that cocoa butter will lighten it. I am just PRAYING that I am not a diabetic. Can anyone please help me?