Doesn't look it [to me - and you've noted it's been there for a while; it would have progressed], but please don't quote me on that. And PS, if everyone thought their questions were stupid, nobody would learn.
EXACTLY..!! my question is what kind of substrate are you using, has he or she been trying to escape HEAVILY..Regarding the substrate if so then try and warm water rinse it off and see if that helps...