Malingering?

Oh, yes, absolutely. And malingering is more common to mental disorders rather than physical, I believe. If I say that I speak to the unicorns in my garden, who is to say that I do not? But physical maladies have become more simple to detect.

I admit that I have been suspicious of other’s self-diagnosed mental disorders. “I don’t need a shrink to tell me that I’m...” depressed. Bipolar. Usually a victim of.

It is probably very common.