Can Stress Cause Neurological Symptoms?

How does stress produce physical neurological symptoms?

Chronic psychological stress activates the body's stress-response systems — particularly the autonomic nervous system and the hypothalamic-pituitary-adrenal (HPA) axis. Under sustained activation, these systems produce physiological changes that can directly generate symptoms:

• Hyperventilation — anxiety often causes rapid, shallow breathing, which lowers carbon dioxide in the blood. This changes blood pH and can cause tingling or numbness in the hands, feet, and face, and lightheadedness.
• Muscle tension — prolonged tension in the muscles of the neck and scalp contributes to tension-type headaches. Tightness in the chest and shoulders can feel alarming.
• Autonomic dysregulation — an overactive sympathetic nervous system produces palpitations, trembling, sweating, and a feeling of unreality or dissociation.
• Sensitized pain processing — chronic stress lowers pain thresholds, making ordinary sensations feel more intense or painful.

What is functional neurological disorder?

Functional neurological disorder (FND) — sometimes called conversion disorder — is a recognized neurological condition in which the brain produces genuine motor or sensory symptoms without a structural or degenerative cause. It is not the same as "faking" symptoms and is not a diagnosis of exclusion that means nothing is wrong.

FND can produce limb weakness or paralysis, non-epileptic seizures (also called psychogenic non-epileptic seizures or PNES), abnormal movements, tremor, numbness, or vision and speech changes. The symptoms are real and can be disabling. Psychological stress and trauma are often contributing factors, though not always.

A neurologist makes the FND diagnosis through positive clinical signs — certain examination findings that indicate the symptoms are of functional rather than structural origin — not simply by ruling everything else out. FND responds best to a multidisciplinary approach including neurologist-confirmed diagnosis, physical or occupational therapy, and psychological support 1Ref 1National Institute of Mental Health (2023).Anxiety Disorders.Overview of anxiety disorder physical symptoms and treatment approaches.

Anxiety and its specific neurological-seeming symptoms

Generalized anxiety disorder and panic disorder produce a range of physical symptoms that can be alarming precisely because they feel neurological 2Ref 2DeGeorge KC, Grover M, Streeter GS (2022).Generalized Anxiety Disorder and Panic Disorder in Adults.Physical symptoms of GAD and panic disorder including somatic manifestations:

• Tingling and numbness in the extremities or face (hyperventilation-related)
• Dizziness and lightheadedness (autonomic)
• Trembling or shaking hands
• Headache — both tension-type and migraine are more common in people with anxiety
• Visual disturbances — blurring or tunnel vision during high anxiety
• Cognitive symptoms — difficulty concentrating, memory lapses (overlapping with the brain fog discussed separately)
• Sense of unreality or depersonalization — feeling detached from oneself or surroundings, sometimes called derealization

These symptoms are genuine nervous system responses to anxiety, not signs that something is structurally wrong with the brain. That said, they deserve evaluation — both to confirm they are anxiety-related and to provide effective relief 3Ref 3US Preventive Services Task Force (2023).Screening for Anxiety Disorders in Adults: US Preventive Services Task Force Recommendation Statement.Importance of identifying anxiety disorders in adults presenting with symptoms.

How is this evaluated, and what helps?

The starting point is ruling out treatable medical causes. A clinician will ask about the pattern of symptoms (constant vs. episodic, what triggers them, associated symptoms), perform a neurological examination, and may order bloodwork or imaging if there is any uncertainty. Blood pressure monitoring can rule out orthostatic hypotension. Thyroid function and blood glucose testing may be relevant.

Once a functional or anxiety-related origin is established, the most effective treatments are behavioral:

• Cognitive behavioral therapy (CBT) has robust evidence for anxiety, panic disorder, and functional neurological symptoms 4Ref 4Hofmann SG, Asnaani A, Vonk IJJ, Sawyer AT, Fang A (2012).The Efficacy of Cognitive Behavioral Therapy: A Review of Meta-analyses.CBT as an effective treatment for anxiety disorders and associated physical symptoms. It helps people understand the nervous system's role in generating symptoms and builds tools to interrupt the cycle.
• Physiotherapy is a core treatment for FND, particularly for motor symptoms, and works best alongside psychological support.
• Mindfulness-based therapies have evidence for anxiety and related conditions 5Ref 5Goldberg SB, Tucker RP, Greene PA, et al. (2018).Mindfulness-Based Interventions for Psychiatric Disorders: A Systematic Review and Meta-analysis.Mindfulness-based interventions with evidence for anxiety and related conditions.
• Treating underlying anxiety or depression — when mood disorders are present and untreated, physical symptoms rarely fully resolve.

A Gale behavioral health clinician can evaluate anxiety and its physical manifestations, provide or coordinate therapy, and work alongside a primary care clinician if a medical workup is also needed.