Subclinical

Subclinical, also known as subthreshold, subsyndromal, or minor, are psychological symptoms that are present and potentially distressing but don’t meet the full diagnostic criteria for a specific mental disorder as defined by DSM-5. While not severe enough to warrant a formal diagnosis, subclinical conditions are clinically relevant because they often cause functional impairment and reduce quality of life. Subclinical conditions often act as a prodromal (early) stage of illness. Ignoring them can lead to worsening symptoms, as they are associated with high use of available services and mortality rates comparable to full-blown disorders. In research, subclinical entails:

• Predictive validity of subthreshold conditions, particularly depression, becoming future mental disorders.
• Prevalence rates, as in subclinical depression having a prevalence of 1.3%-17% in primary care settings, and subclinical PTSD is found in about 5%–21% of veterans.
• Methodology in the form of self-report questionnaires to identify individuals with elevated symptom levels that fall just below the diagnostic threshold.
• Analogue studies use subclinical conditions as models to allow researchers to examine milder, more common forms of a condition to infer mechanisms of the full-blown disorder.
• Distinction from “normal” distinguishes subclinical from healthy by the presence of a distressing or impairing level of symptoms, even if not officially diagnosed.