Social anxiety disorder and specific phobia !
Intense, persistent fear of social situations or of specific things (heights, animals, blood, flying) that leads to avoidance and interferes with life.
Updated 2026-11-01
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What it is
Anxiety disorders in which fear is out of proportion to the real danger and lasts 6 months or more. In social anxiety disorder the fear is of being judged, embarrassed or humiliated in social or performance situations. In specific phobia the fear is triggered by a particular object or situation. Both lead to avoidance or to enduring the situation with great distress.
Who gets it
Specific phobias are among the most common mental disorders, with a lifetime prevalence near 7–10%; social anxiety disorder affects about 4–7% at some point. Both usually begin in childhood or adolescence and are more common in women. Most people with them never seek treatment.
Causes
- Genetic and temperamental factors such as behavioural inhibition
- Learning by direct traumatic experience, observation or information
- Negative social experiences such as bullying or humiliation (social anxiety)
- Overprotective or critical parenting styles
Risk factors
- Family history of anxiety disorders
- Shy, inhibited temperament in childhood
- Female sex
- Traumatic events involving the feared object or situation
- Visible conditions that draw attention, such as stuttering or disfigurement (social anxiety)
Pathophysiology
Fear circuits centred on the amygdala respond excessively to the feared cue, while the prefrontal cortex fails to dampen this response; the insula heightens awareness of bodily arousal. Avoidance prevents new learning that the situation is safe, which maintains the fear. Blood-injection-injury phobia has a distinctive two-phase response: an initial rise then a vasovagal drop in heart rate and blood pressure that can cause fainting.
Classification
- Social anxiety disorder; performance-only specifier when limited to speaking or performing in public
- Specific phobia, animal type
- Specific phobia, natural environment type (heights, storms, water)
- Specific phobia, blood-injection-injury type (may cause fainting)
- Specific phobia, situational type (flying, elevators, enclosed spaces) and other types
Symptoms and signs
- Immediate anxiety or a panic attack when exposed to the feared situation
- Avoidance of the situation or enduring it with intense distress
- Blushing, trembling, sweating or a shaky voice in social situations
- Fear of showing anxiety and being negatively evaluated
- Anticipatory anxiety days or weeks before an event
- Fainting in blood-injection-injury phobia
Diagnosis
- Clinical
- Clinical interview: marked, persistent fear (6 months or more) out of proportion to real danger, with avoidance and significant distress or impairment. The trigger is specific: social evaluation in social anxiety, a defined object or situation in specific phobia. Screening tools such as the Mini-SPIN or GAD-7 can help.
- Tests
- No laboratory test is diagnostic. Thyroid function or other tests only if a medical cause of anxiety is suspected; review of caffeine, substances and medicines.
- Imaging
- Not needed.
Differential diagnosis
- Panic disorder and agoraphobia
- Generalised anxiety disorder
- Avoidant personality disorder
- Autism spectrum disorder
- Body dysmorphic disorder and obsessive-compulsive disorder
Goal of treatment
Reduce fear and avoidance so the person can face necessary situations and recover social, academic and work functioning.
Treatment
- Conservative
- Cognitive behavioural therapy with exposure is first-line for both; for specific phobia, graded or in vivo exposure (including virtual reality) is the treatment of choice and often needs few sessions.
- Medical
- For social anxiety disorder, SSRIs or SNRIs are first-line medicines, alone or with cognitive behavioural therapy.
- Medical
- Beta-blockers such as propranolol may be used before occasional performance situations; benzodiazepines are limited to short-term use because of dependence and they interfere with exposure learning.
- Lifestyle
- Applied tension technique for blood-injection-injury phobia, and support for gradually increasing social activity and reducing alcohol use.
Complications
- Depression
- Alcohol and other substance use disorders
- Educational and occupational underachievement
- Avoidance of medical care (needle or dental phobia)
- Social isolation
Prognosis
Without treatment both tend to be chronic. Exposure-based therapy is highly effective, especially for specific phobias. Social anxiety disorder responds well to therapy and medicines, although some symptoms may persist.
Test yourself
Think of the answer, then tap the question to see it.
What is the first-line treatment for specific phobia?
Exposure-based cognitive behavioural therapy (graded or in vivo exposure).
Which medicine class is first-line for social anxiety disorder?
SSRIs (or SNRIs).
Which type of specific phobia can cause fainting?
Blood-injection-injury phobia, through a vasovagal response.
Which drug class can be used before an occasional public performance to reduce tremor and palpitations?
Beta-blockers such as propranolol.
Related conditions
- Panic disorder
- Generalized anxiety disorder
- Major depressive disorder
- Alcohol use disorder
- Separation anxiety disorder
- Personality disorders (clusters A, B and C)
- Obsessive-compulsive disorder (OCD)
Educational information, not medical advice. For any symptom, see a health professional.
Sources: Social anxiety disorder (MedlinePlus (U.S. National Library of Medicine), 2025); Phobia - simple/specific (MedlinePlus (U.S. National Library of Medicine), 2025).
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