What is the current state of the law on the credibility of medical malpractice cases?

While "a conservative course of treatment can undermine allegations of debilitating pain, such fact is not a proper basis for rejecting the claimant's credibility where the claimant has a good reason for not seeking more aggressive treatment." Carmickle v. Astrue, 533 F.3d 1155, 1162 (9th Cir. 2008) (citing Orn v. Astrue, 495 F.3d at 638).