"When people are injured doing high risk jobs and we find they are suffering from injuries sustained as a result of those jobs, we have a tendency to not have compassion for them because “it’s their own fault.” Furthermore, because of the invisible nature of their illness, we often do not believe them. If we do actually believe them, we either blame them causing them shame or dismiss their issues altogether.

Yet, if we know the apparent cause of illness and injury, do we show compassion and care? Or do we turn away and let these individuals fend for themselves? Most people do not take on risky jobs with the intent of becoming permanently injured and disabled. They use all kinds of safety measures and equipment to lessen the risk of injury.

What about the risk of driving a car? I think of those who were injured due to vehicle crashes, such as Dr. Margaret Ferrante and Hannah Andrusky, or from a rock climbing accident such as Angela Pierce. If they were at fault for causing the accident, would we look differently at them and dismiss their injuries just like those who participate in risky jobs and hobbies?

We may believe someone more if there appears to be an obvious reason for their illness or pain. Imagine the lack of belief when a cause of a person’s illness can’t be determined.

. . . 

This brings up a question in regards to the disability and illness community. Why do people who live with illness, pain and disability and whose symptoms are invisible tend to be looked upon as guilty of faking or lying about their situation? It seems that they are guilty until proven innocent. Although doctors have already determined their condition by spending time with the patient and putting them through tests, we still often believe we know better.

Sometimes our loved one who is suffering has yet to be diagnosed and, in this case, we think, “Well, if a doctor can’t figure it out, then maybe the person really is faking.” Yet, even doctors admit that many patients have complicated cases and a diagnosis may take years and even decades to determine. During this time, the person living with the pain and illness daily continues on in misery while having their symptoms dismissed by friends and family."

It’s Your Own Fault | Disability.Blog http://usodep.blogs.govdelivery.com/2014/01/13/its-your-own-fault/

Here is a more technical version of the same principle from Judge Posner:

As countless cases explain, the etiology of extreme pain often is unknown, and so one can't infer from the inability of a person's doctors to determine what is causing her pain that she is faking it. E.g., Villano v. Astrue, 556 F.3d 558, 562 (7th Cir. 2009) (per curiam); Moss v. Astrue, 555 F.3d 556, 561 (7th Cir. 2009) (per curiam); Johnson v. Barnhart, 449 F.3d 804, 806 (7th Cir. 2006); Lester v. Chater, 81 F.3d 821, 834 (9th Cir. 1995). The administrative law judge followed up the passage we just quoted by saying "one would expect that the claimant's hysterectomy or oophorectomy [the surgical removal of the ovaries, or one of them] would have given her some relief but those procedures did not . . . . The claimant's alleged pain remains." The fact that a medical procedure fails is weak evidence that the patient is a malingerer; and since the judge said merely that she didn't find the plaintiff's testimony "entirely" credible, we can't tell whether she thought her a malingerer.

Parker v. Astrue, 597 F.3d 920, 922 (7th Cir. 2010)