Phobias (Phobic Disorders)

What a phobia is

Fear is a normal, useful response to danger. A phobia is different in four ways:

• the fear is out of proportion to the real risk
• it is persistent, typically lasting 6 months or more
• it leads to avoidance, or to enduring the situation with intense distress
• it causes real impairment in daily life

Adults often recognize that the fear is excessive but cannot control it. Children may not. The physical reaction is the body's fight-or-flight system switching on: pounding heart, rapid breathing, sweating and trembling. For help identifying and naming everyday fears, see fears and phobias.

Types of phobic disorders

Specific phobia

Fear of one object or situation. The DSM-5-TR groups specific phobias into five types:

Many people have more than one specific phobia.

Social anxiety disorder (social phobia)

An intense fear of being judged, embarrassed or scrutinized in social or performance situations. It is more pervasive than a specific phobia. See social phobia.

Agoraphobia

Fear of situations where escape might be hard or help unavailable if panic strikes: public transport, open or enclosed spaces, crowds, or being outside the home alone. It often follows panic attacks. See agoraphobia.

Symptoms

When facing or even thinking about the feared thing:

• fast heartbeat, palpitations and chest tightness
• shortness of breath or a choking feeling
• sweating, trembling, hot or cold flushes
• nausea, dizziness, feeling faint
• an overwhelming urge to escape
• a sense of losing control or unreality
• full panic attacks

Children may cry, freeze, cling or have tantrums.

Why blood and needle phobias cause fainting

Blood-injection-injury phobia is unique. After an initial surge in heart rate and blood pressure, there is a sudden drop (a vasovagal response), which can cause fainting. This is why ordinary relaxation can make it worse, and a technique called applied tension is used instead.

Causes and risk factors

• Direct experiences: a dog bite, a frightening flight or a choking episode
• Observation: seeing a parent or other person react with fear
• Information: repeated warnings or frightening stories
• Genetics and temperament: phobias and anxiety run in families. Behaviorally inhibited (shy, cautious) children are at higher risk
• Evolutionary preparedness: humans learn fears of snakes, heights and spiders especially easily

Avoidance keeps a phobia going. Each time you escape, anxiety drops, which rewards the escape and stops you learning that the situation is safe.

Diagnosis

A primary care doctor, psychologist or psychiatrist diagnoses a phobia through a clinical interview. They ask what you fear, how you react, how long it has lasted, what you avoid and how it affects your life. Questionnaires can measure severity. They also check for related conditions, such as panic disorder, obsessive-compulsive disorder, PTSD (fear linked to a traumatic event) and depression, and for physical causes of symptoms such as heart rhythm or thyroid problems.

Phobia treatment

Exposure therapy

Exposure therapy is the most effective treatment for specific phobias. With a therapist, you face the feared thing gradually and repeatedly, staying with the anxiety until it falls, so the brain learns that the danger is not real.

• Graded exposure: you build a "fear ladder" from least to most frightening steps, for example from looking at a picture of a spider, to seeing one in a jar, to letting one walk on your hand.
• One-session treatment: a single, intensive session of about 3 hours. Studies show most people with animal and some other phobias improve substantially after one session.
• Virtual reality exposure: useful for fears of flying, heights or storms that are hard to recreate.
• Applied tension: for blood-injection-injury phobia, you tense the muscles of the arms, legs and body to raise blood pressure and prevent fainting during exposure.

Cognitive behavioral therapy (CBT)

CBT combines exposure with work on the thoughts that drive fear, such as overestimating danger, and is the main treatment for social anxiety disorder and agoraphobia.

Medicines

Medicines are not a first-line treatment for specific phobias. Short-term options for occasional situations, such as a beta-blocker before a speech or a sedative for a necessary procedure, may be used under medical guidance. SSRIs are effective for social anxiety disorder, panic disorder and agoraphobia. Benzodiazepines can interfere with learning during exposure and carry dependence risk.

Self-help

Self-guided gradual exposure using books or apps based on CBT can work for milder phobias. Avoid alcohol as a coping strategy.

Phobias in children

Many fears are normal stages of development: fear of strangers in infancy, of the dark and monsters in preschool years, of injury and storms in school-age children. They usually fade. A phobia is more likely if the fear lasts over 6 months, is extreme for the child's age and interferes with family life or school. Child-focused exposure therapy works well, and parents learn to support facing fears rather than accommodating avoidance.

Outlook

Untreated, specific phobias often persist for years and can narrow life choices. With exposure therapy, most people improve markedly, and gains usually last. Occasional practice after treatment helps prevent the fear returning.

Frequently asked questions

What is the difference between a fear and a phobia?

A fear is a normal response to a real or possible danger and passes once the danger has gone. A phobia is intense, lasting, out of proportion to the actual risk, and leads to avoidance or severe distress that interferes with daily life.

What are the most common phobias?

Among specific phobias, the most common are fears of animals and insects (especially spiders and snakes), heights, flying, enclosed spaces, storms, needles and blood. Social anxiety disorder is also very common. Many people have more than one phobia.

Can phobias be cured?

Many can be overcome. Exposure therapy is highly effective for specific phobias, and many people improve after a few sessions or even a single extended session. Social anxiety disorder and agoraphobia usually need longer CBT, sometimes combined with medicine.

How does exposure therapy work?

You face the feared thing in small, planned steps, starting with what is manageable and staying until your anxiety lowers. Each time, your brain learns that the feared outcome does not happen and that you can cope. Over time, the fear response weakens.

Why do I faint when I see blood or needles?

Blood-injection-injury phobia triggers a two-step reaction: heart rate and blood pressure rise, then drop suddenly, which reduces blood flow to the brain. Lying down for procedures and learning applied tension, which raises blood pressure by tensing muscles, prevent most fainting.

When should I see a doctor about a phobia?

See a doctor or mental health professional if a fear limits your work, travel, relationships or health care, if you have panic attacks, or if you use alcohol or drugs to cope. If you have thoughts of suicide, call or text 988 in the US.