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# 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

## Structures involved

Tap one to see what it is and open it in 3D.

- [Amygdala](https://durgical.com/en/anatomy/amygdaloid-body/)
- [Insula](https://durgical.com/en/anatomy/insula/)
- [Frontal lobe](https://durgical.com/en/anatomy/superior-frontal-gyrus/)
- [Hippocampus](https://durgical.com/en/anatomy/hippocampus/)
- [Cingulate gyrus](https://durgical.com/en/anatomy/cingulate-gyrus/)
- [Hypothalamus](https://durgical.com/en/anatomy/hypothalamus/)

## 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](https://durgical.com/en/anatomy/amygdaloid-body/) respond excessively to the feared cue, while the prefrontal cortex fails to dampen this response; the [insula](https://durgical.com/en/anatomy/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

## Red flags

- Avoidance that prevents necessary medical care (needles, procedures)
- Heavy alcohol or sedative use to cope with social situations
- Depression or suicidal thoughts
- Complete withdrawal from school or work

## 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.

[Add to my cards (4)](https://durgical.app/estudiar/?add=/en/conditions/social-anxiety-disorder-and-specific-phobia/)

## Related conditions

- [Panic disorder](https://durgical.com/en/conditions/panic-disorder/)
- [Generalized anxiety disorder](https://durgical.com/en/conditions/generalized-anxiety-disorder/)
- [Major depressive disorder](https://durgical.com/en/conditions/major-depressive-disorder/)
- [Alcohol use disorder](https://durgical.com/en/conditions/alcohol-use-disorder/)
- [Separation anxiety disorder](https://durgical.com/en/conditions/separation-anxiety-disorder/)
- [Personality disorders (clusters A, B and C)](https://durgical.com/en/conditions/personality-disorders/)
- [Obsessive-compulsive disorder (OCD)](https://durgical.com/en/conditions/obsessive-compulsive-disorder/)

Educational information, not medical advice. For any symptom, see a health professional.

Sources: [Social anxiety disorder](https://medlineplus.gov/ency/article/000957.htm) (MedlinePlus (U.S. National Library of Medicine), 2025); [Phobia - simple/specific](https://medlineplus.gov/ency/article/000956.htm) (MedlinePlus (U.S. National Library of Medicine), 2025).

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Source: https://durgical.com/en/conditions/social-anxiety-disorder-and-specific-phobia/
License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Cite as: DurgiPedia (durgical.com), https://durgical.com/en/conditions/social-anxiety-disorder-and-specific-phobia/