Talk:Dragon Head Stone/@comment-68.206.59.237-20140702043218/@comment-2605:6000:6DC0:D000:61E6:74D4:4D1A:2EBF-20190920211827

He's saying that if you have egghead already you can turn it into a dragon head, but if you contract egghead or an egghead evolution while you already have a dragon head, it overrides the dragon head.

In addition, if you have egghead overtop of dragon head, using a vermifuge will leave you with a dragon head, not a normal head.