Clinical Symptoms of Anxiety
Anxiety disorders present with a characteristic triad of psychological symptoms (excessive worry, fear, and anticipatory anxiety), physical/somatic symptoms (palpitations, shortness of breath, sweating, muscle tension), and behavioral symptoms (avoidance, restlessness, irritability). 1, 2, 3
Core Symptom Domains
Psychological Symptoms
The hallmark psychological features include:
- Excessive, uncontrollable worry about multiple everyday situations (particularly in generalized anxiety disorder)
- Feeling nervous, anxious, or on edge
- Fear of negative evaluation by others (social anxiety)
- Unexpected panic attacks with abrupt surges of intense fear
- Anticipatory anxiety about future events
- Feeling that something awful might happen
- Difficulty controlling the worry 1, 2
Physical/Somatic Symptoms
Anxiety manifests with prominent physical complaints that often drive patients to seek medical care:
- Cardiovascular: Palpitations, chest pain, rapid heartbeat
- Respiratory: Shortness of breath, feeling of choking
- Neurological: Dizziness, lightheadedness, numbness
- Gastrointestinal: Stomachaches, nausea, dry mouth
- Musculoskeletal: Muscle tension, headaches
- Autonomic: Sweating, trembling, hot flashes or chills
- Sleep: Insomnia, difficulty falling or staying asleep, feeling drowsy 3, 4, 5
Behavioral and Cognitive Symptoms
- Restlessness or being so restless it's hard to sit still
- Being easily fatigued
- Difficulty concentrating or mind going blank
- Irritability and being easily annoyed
- Avoidance behaviors of feared situations or objects
- Inability to relax 1, 6
Disorder-Specific Presentations
Different anxiety disorders emphasize particular symptom patterns 2:
- Generalized Anxiety Disorder: Chronic, excessive worry about numerous domains with prominent muscle tension and sleep disturbance
- Panic Disorder: Recurrent unexpected panic attacks with physical symptoms (palpitations, sweating, trembling, shortness of breath)
- Social Anxiety Disorder: Fear of social situations with concern about negative evaluation
- Specific Phobia: Excessive fear of particular objects or situations
- Separation Anxiety: Developmentally inappropriate distress when separated from attachment figures
- Agoraphobia: Fear of situations where escape might be difficult (crowds, enclosed spaces)
Practical Clinical Assessment
The GAD-7 screening tool efficiently captures the core anxiety symptoms over the past two weeks 1:
- Feeling nervous, anxious, or on edge
- Not being able to stop or control worrying
- Worrying too much about different things
- Having trouble relaxing
- Being so restless that it's hard to sit still
- Becoming easily annoyed or irritable
- Feeling afraid, as if something awful might happen
A score ≥9 indicates clinically significant anxiety (sensitivity 57.6%-93.9%, specificity 61%-97%) 1, 3.
Critical Clinical Pitfalls
Common somatic presentations can masquerade as primary medical conditions, leading to extensive unnecessary workups. The most frequent somatic complaints—headaches, stomachaches, palpitations, dizziness, and sleep disturbance—often prompt cardiology, neurology, or gastroenterology referrals before anxiety is recognized 7, 5. Conversely, anxiety symptoms can be dismissed when they occur alongside genuine medical conditions, despite anxiety disorders having disproportionately high comorbidity with cardiovascular, respiratory, gastrointestinal, and neurological conditions 7.
Distinguish pathological anxiety from normal developmental fears and everyday worries. Clinically significant anxiety causes substantial distress or functional impairment in social, occupational, or other important areas, persists beyond developmentally appropriate timeframes, and is excessive relative to the actual threat 2.
The symptoms overlap considerably with depression, and approximately 34% of adults experience anxiety disorders during their lifetime, with women affected twice as often as men 3, 4. Physical symptoms decrease with effective treatment regardless of modality 5.