Does anyone else's bellybutton do this?

Silver

I get like a horizontal red line, looks like a scratch, coming out of my bellybutton. It's almost like a tear and sometimes it itches. Neosporin makes it go away, but it sporadically comes back like maybe 3 or 4 times a year. Any idea what causes it? I don't wear tight clothing, I've never been pregnant, I don't have any piercings, and I'm losing weight, not gaining.