What is latent depression?

Hidden depression in some of the old diagnostic criteria, they think that there are some depression patients not to depressed performance, but to the main complaints of physical discomfort, always say uncomfortable here and there uncomfortable, go to see a doctor everywhere, and then did not find a specific disease, but the patient is still uncomfortable here, uncomfortable there, still think they are sick, or keep seeing. In some older diagnostic criteria, this is called latent depression, but the name has been largely ruled out, and it is no longer called latent depression, but is named after somatoform disorders.