This is is what I'm thinking right now, and I wish I could find some proof I'm wrong:

No other sensations exist but neutral sensations and pains and discomforts such as cravings or wants. There isn't such a thing as pleasure, because there's no such thing as a good sensation, there are only sensations that are pain or neutral or relief from a pain or craving or want. No pleasure exists, so there can't be a loss of pleasure. That means there can't be anhedonia.

That also means there's no such thing as a feeling of happiness, or a feeling of content or satisfaction or pleasure or any positive emotion. Also, emotions are only in the mind, and the idea that they're felt in the body is just imagination and fiction.