Tooth impaction. An impacted tooth is one that fails to erupt into the dental arch within the expected developmental window. Because impacted teeth do not erupt, they are retained throughout the individual's lifetime unless extracted or exposed surgically.
As a result, many people with fibromyalgia syndrome experience chronic depression alongside their illness. Depression can leave you feeling alone, anxious, and extremely sad, and can make fibromyalgia even more troublesome to deal with. It is important to recognize the symptoms of depression so that you can seek appropriate treatment from your health care provider.
A 2007 review divides individuals with fibromyalgia into four groups as well as mixed types:  1 extreme sensitivity to pain but no associated psychiatric conditions (may respond to medications that block the 5-HT3 receptor)  2 fibromyalgia and comorbid, pain-related depression (may respond to antidepressants)