It is scattered parasites of various kinds. The scatter is either caused by long term chronic infection or some die off event like a detox .When I say scatter, I mean parasite per skin cell. It is in the billions . it is systemic, meaning in your blood Stream - but even this can be fixed. Drink a bucket load of African bitters for 30 days . Stop all carbs.
But they are week. You just have to be a bigger bastard than they are. You can beat it .
Once you accept this. You will fix it. You will also have chronic Candida . Treat parasites and then treat candida.