they dont disappear, they literally scab up and dissolve like any other scratches. i might be, because i just ate cereal an hour ago, and when i was eating
about 5 minutes ago, i saw another one of these little random scratches, near my knee. they are really small, like i said, about 1mm, and a red bump forms with it(over it). i'm not sure if they are bug bites, because i've looked it up and nothing like this came up.