Definition
“Shutdown” is a Polyvagal-Theory-adjacent term used clinically to describe low-activation states. Applying it indiscriminately misses depression, fatigue, illness, medication effects, sleep deprivation, and grief.
Why it matters
Overusing a single label can obscure treatable conditions. A person who is “shut down” may need medical care, a nap, an antidepressant, or a change of environment.
The Science
Low-activation states have many causes. Differentiation is a clinical skill, not a philosophical exercise.
The NSI Perspective
NSI does not use “shutdown” as a diagnostic label. It uses it as a starting question.
Clinical Implications
Assessment should ask what kind of low-activation this is. Answers change treatment.
Practical Application
If you feel shut down, ask what specifically your body is doing. Is it heavy, or slow, or absent, or afraid? The details matter.
References
- 1.Kozlowska K, et al. Harv Rev Psychiatry. 2015;23(4):263–287.