The nervous system is your internal safety system – it detects threat, triggers mobilization and allows a return to calm when the situation passes. When you live under strain for a long time, this system begins to react “too strongly” or “for too long”, and the body sends signals that are easy to dismiss.
Overactive nervous system — symptoms of a “constant alarm”
An overactive nervous system is a state in which the “fight or flight” response practically does not switch off. In research on chronic stress, among others, increased sympathetic reactivity, sleep disturbances and difficulties regulating emotions are described.
Typical symptoms of an overactive nervous system and chronic stress:
Difficulty falling asleep, waking during the night, the feeling of a “wired” head despite tiredness.
A feeling of “being constantly on alert”: being easily startled, excessive vigilance, alarm-like reactions to minor stimuli.
Muscle tension: stiff neck, rigid shoulders, jaw clenching, tension-type headaches without an obvious cause.
Heart palpitations, rapid breathing, a feeling of “shortness of breath” during stress, episodes of anxiety or panic.
Digestive problems: bloating, diarrhea/constipation, abdominal pain that worsens with stress.
Irritability, outbursts of anger, the sense that you “react too strongly” relative to the situation.
From a physician’s perspective, some of these symptoms can mimic somatic diseases (e.g. cardiological, endocrinological), so the first step is always to rule out acute and chronic somatic conditions, and only then work on regulating the nervous system.
When the nervous system “shuts down” — symptoms of freeze and exhaustion
After a long period of excessive mobilization the nervous system may shift into a “freeze” mode — instead of arousal there is disconnection, lack of energy and a sense of numbness. This is still a form of dysregulation, although from the outside it is often mistaken for “laziness” or “lack of motivation.”
Symptoms suggesting chronic overload and “extinction” of the stress response:
Chronic fatigue, lack of strength after a night’s sleep, the need to “keep forcing yourself” by willpower.
The feeling of “brain fog”: difficulty making decisions, reduced concentration, forgetting simple things.
Social withdrawal, reluctance to interact even with close ones, a feeling of indifference.
Increasing sadness, a sense of hopelessness, sometimes depressive symptoms, which may co-occur with nervous system dysregulation.
Pains “without an identifiable cause” — joints, back, head — which intensify with stress or strain.
How to distinguish “normal stress” from nervous system dysregulation?
Temporary stress is part of life — symptoms appear and disappear as the situation passes, and you feel your body can return to a relative state of calm. We speak of dysregulation more often when symptoms persist for weeks or months, appear across multiple areas (sleep, body, emotions) and begin to significantly limit work, family or social functioning.
Warning signs at which it’s worth consulting a doctor (e.g. a psychiatrist, your GP) or a psychotherapist:
Symptoms worsen despite attempts at “rest” and lifestyle hygiene.
Resignation thoughts appear, a feeling that “I can’t cope,” or suicidal thoughts.
Episodes of losing contact with reality, very intense anxiety, obsessive thoughts.
Somatic symptoms are acute (chest pain, shortness of breath, sudden speech disturbance, sudden paralysis) — in that case urgent contact with SOR is necessary.
What you can do — first steps in regulation
Nervous system regulation does not replace medical diagnostics or treatment of mental disorders, but can be an important element of prevention and support in therapy. Research on chronic stress indicates that effective interventions include among others body-based techniques, physical activity, psychoeducation and psychotherapy focused on emotion and trauma regulation.
Example areas of work that are often part of the clinical process:
Education about stress mechanisms and symptoms of dysregulation — naming what is happening often already reduces tension.
Regulation of the circadian rhythm: sleep, exposure to daylight, regular meal times.
Simple, short body-based interventions (breathing, relaxing tense muscle groups, micro-breaks during the day).
If needed — pharmacotherapy chosen after psychiatric assessment, if symptoms point to anxiety disorders, depressive disorders or other psychiatric diagnoses.
This text is educational in nature and does not replace individual medical or psychiatric consultation. If you have worrying symptoms, contact your doctor.
Selected source materials:
• Schneiderman N, Ironson G, Siegel SD. Stress and health: Psychological, behavioral, and biological determinants. Annu Rev Clin Psychol. 2005;1:607–628. • McEwen BS. Protective and damaging effects of stress mediators. N Engl J Med. 1998;338(3):171–179. • Chrousos GP. Stress and disorders of the stress system. Nat Rev Endocrinol. 2009;5(7):374–381.
