What is this? (With picture)

[whatonearthisthisthing]

Hi all, I am hoping you can help me..

My sister has had a dry patch of skin on her belly (about the size of a blueberry) since the birth of her son 4 years ago. It was always pale in colour so she ignored it, but recently it has started darkening and today she noticed it is black?!

Should she be worried? She will book a go appointment but might not get an appointment for a while so I said I would try and get some feedback on here?

Any feedback would be amazing!!

Yes she needs to get it checked out. She needs to tell the receptionist why she is booking the appointment too, they'll probably give her an appointment sooner. I'm not saying its anything scary but with changes like that it needs seeing.

She needs to tell the receptionist it has recently changed and gone black. She needs an appointment urgently. I hope she'll get reassurance, but she shouldn't wait.

Definitely get this checked ASAP