Yes I think it might be a cyst. the area is shiny and has a slight bulge.If you are worried that it is something other than the lack of urticating hairs then can you provide a closer, brighter and clearer photograph of it. Do you think it is a cyst or something like that?
Ahhh my suspicions were right..
Thank you for your helpHave a look here -
Maybe you can find some help.