I suppose a possible problem for some human without an mentally ill mind, however in depression it is a bit more common.
Coupled with eating and sleeping issues it can be a dagger in the pursuit to find some sort of good feelings in life.
Not all of us may be crazy about sex although it has been and always will be one of the best ways for a human to feel good.
We do so to multiply our species but we also do so because it feels good.
And in depression, as it progresses, these feel good moments become more and more scarce and to a degree in which we begin to believe they no longer exist.
Slight loss in sexual desire and decline in responsiveness to it.
Sexual desire begins to fade and only brought on by considerable amount of stimulation.
Any responsiveness to sexual stimuli is lost.