It is situated above and to the right of her left shoulder on the back, almost at the nape of the
neck (so between shoulder blade and
neck but up high at the nape of the
neck). It is under the
skin and can be felt at the nearly same position even if the skin is shifted around (we think it may not be a part of the skin), it feels like it is situated on the muscle under the skin. She has had it a week and she finds it annoying.