"There are a lot of people walking around with an endemic low-grade depression," said Dale F. Firestone, a local psychotherapist.

Her disorder made it hard to travel, eat out or entertain, limiting her social life and contributing to a chronic low-grade depression.

Cabot lifted her delicate chin to say, "He is suffering from grief, guilt, and low-grade depression, all of which are understandable.

"YOU feel a low-grade depression," he says.

Some scientists used to believe that because fibromyalgia was accompanied by low-grade depression, there may be a link between the two illnesses.

This site offers information on identifying and treating dysthymia, a "low-grade" depression.

In the early 1990's, she received a diagnosis of dysthymia, a chronic, low-grade depression that lingers for two years or longer.

Their low-grade depression may be precipitated by a life crisis, like a divorce, job loss or death of a loved one.

But the something that had manifested itself in Goblin's behavior, in the low-grade depression of Elmo and others, was affecting everybody.

A low-grade depression had settled over her life and marriage.