Nervous System · definition
The coordinated physiological and behavioral changes that help the body respond to a perceived demand or threat.
How the term is used
Stress responses can involve autonomic, hormonal, cardiovascular, respiratory, attentional, and behavioral changes.
Why it matters
It provides a more accurate foundation than treating every stress sensation as a disorder.
Where this comes up
Where this fits in a practice
The guides explain the idea in context; the service pathways are there when reading is not enough. Educational content only — nothing here is medical or mental-health care.