Does "subthreshold" posttraumatic stress disorder have any clinical relevance?

Area of Science:

• Psychiatry
• Clinical Psychology
• Mental Health Research

Background:

• Subthreshold posttraumatic stress disorder (PTSD) is a condition not meeting full diagnostic criteria.
• Understanding the clinical significance of subthreshold PTSD is crucial for effective mental healthcare.
• Comorbid conditions like major depression and panic disorder can influence symptom presentation and impairment.

Purpose of the Study:

• To compare the impairment and distress levels between subthreshold PTSD and full PTSD.
• To control for the impact of comorbid major depression and panic disorder.
• To assess the desire for treatment for PTSD symptoms in both groups.

Main Methods:

• Diagnostic interviews were conducted with treatment-seeking psychiatric patients.
• Psychosocial impairment was assessed, including social and work functioning.
• The number of suicide attempts and psychiatric hospitalizations were recorded.

Main Results:

• No significant differences in impairment (social/work functioning, suicide attempts) were found between full PTSD and subthreshold PTSD groups.
• Full PTSD patients had more psychiatric hospitalizations and worse global functioning.
• Full PTSD patients were more likely to desire treatment, though most subthreshold PTSD patients also wanted treatment.

Conclusions:

• Subthreshold PTSD is associated with social and work morbidity comparable to full PTSD.
• Clinical criteria may struggle to clearly differentiate between full and subthreshold PTSD.
• Both full and subthreshold PTSD warrant clinical attention and treatment consideration.