These bumps start up like tiny itchy pimples and are very painful when I touch them. Then they ooze a little pus with a watery liquid.. Then they scab over. When the scab comes off (usually with my help), a hole remains. They are in my hair from forehead hair line back. Scalp feels spongy. Two or three scabs were yellowish green. A couple of months ago I had a few just like that on my arm.
I am not sure, but I have similar happen whenever I ingest canola or any food with a similar low-(machine)grade oil. Palm, "vegetable", rapeseed and domesticated animal fats cause similar to myself. I hope this info can somehow help someone.