Looks like it could be a nail pop. If so, add a drywall screw on either side (need to determine direction of joists) to pulling drywall tight to joist. Make sure existing nail is tight. And patch with multiple layers of joint compound, sand, prime, and paint.
Looks like it could be a nail pop. If so, add a drywall screw on either side (need to determine direction of joists) to pulling drywall tight to joist. Make sure existing nail is tight. And patch with multiple layers of joint compound, sand, prime, and paint.