There's a wide range of oddly imprecise and questionable "disorders" that have been suggested over the last hundred years or so, mainly derived from Western cultures. BPD is a semi-older one if I remember right.

Then 'borderline personality disorder' either does not occur outside the West, or it is not inevitably accompanied by this. I have never heard of such a thing in the Middle East.

BPD is part of the human condition and exists everywhere. It might not manifest cutting specifically as often in other cultures, but it would manifest self-harm very often in some fashion.

The middle east is a black box in many ways. I wouldn't expect women with cutting scars to be visible in middle eastern cultures when even showing a woman's ankle is haram.

You'd have never "heard of this" a few decades ago in the US, either, because it wasn't talked about. Mental illness is disturbing and makes people uncomfortable, so the natural reaction is to cover it up and keep it hidden. While there is a legitimate argument to be made that excessive suppression leads to people not getting help, the Left has gone to the opposite extreme to the point of celebrating it and causing people to LARP it.