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There can be a few causes, one that comes to mind first is ear mites. Have a look at the pigs ears, inside and out, look at the folds in the ear and see if the ears are waxy/dirty, or if there is any grainy sugary type residue beneath the ears.
Sometimes an 'allergy' type problem can be to blame e.g. bedding (sawdust/woodshavings), dusty hay.
She's actually not my pig but her owner gave me some daktarin so i guess she know's what it is, she said to pull any infected hair out and to pick any scab's tho i havent yet i have applied the cream, how to i pick the scab's off i tried cleaning it firmly with couled boiled water but nothing came off
I've also noticed something like this with Athena lately. Occasionally I have noticed that her eyes water a bit and this seems to lead to crusties building up just under her eye, kind of like human "sleep".
It doesn't look like she has ear mites and she was just recently treated for mites for an itching issue.