Hello and welcome to the forum. Thanks for starting this discussion. I did a literature search and what I found was only anecdotal stories on the internet of this occurring. With all of the ones I read, it was self assessment only and not a doctor saying "the bedbug bite turned into a mole". Pictures can be misleading as you can not tell without examining in person if it is not just hyper pigmentation that will be temporary or a permanent spot. Or if those who posted are being truthful or misinterpreting the situation. Does that make sense? So, I am not saying that moles will not form from bed bug bites but just that it is unlikely and hasn't been studied. If anyone has an experience to share, please do so.
Have you had an issue with bed bugs, Maria?