I've cut more hair from around Asha's burst cyst, and yes I do think it's a burst cyst. There's no doubt she's had a go at it since but the hole is clear to be seen and these sebaceous cysts do have a habit of bursting. There's still a bit of pus coming out of it so we are washing it twice a day and then using the antiseptic powder on it to try and help it heal. I can't think it's bothering Asha too much, she only occasionally has a little nibble!