Homosexuals who live alone and have large numbers of sexual partners.
Referring to a disorder or illness which does not have a physical cause and may have a psychological cause, as opposed to an organic disorder.
Concerning the specific function or activity of an organ.
In a broader context, this term pertains to a disorder that doesn’t stem from organ disease but rather from a disturbance in its nervous regulation. This disturbance can produce symptoms resembling those of a disease, even though the organ itself remains entirely healthy. For instance, a condition like functional dyspepsia, which exhibits all the symptoms of a gastric ulcer, might actually be attributed to chronic anxiety disrupting the nervous control over the stomach.