Claustrophobia (fear of enclosed spaces): meaning, symptoms, causes and how to overcome it

Claustrophobia is the fear of enclosed spaces: an intense, lasting fear of being shut in, trapped or unable to get out, out of proportion to any real danger, that leads people to avoid lifts, tunnels, crowded trains, small rooms or medical scanners. It is a specific phobia of the situational type. The NHS describes it as an irrational fear of confined spaces and estimates that around 10% of people in the UK are affected by it during their lifetime.

This article is general information, not medical advice. If a fear of enclosed spaces affects your daily life, talk to a doctor or a therapist trained in cognitive behavioural therapy (CBT).

What does claustrophobia mean?

Claustrophobia means “fear of enclosed places”. The word comes from the Latin claustrum, “a shut-in place”, from claudere, “to shut, to close”, joined to -phobia, “fear”, according to Wiktionary. The same Latin root gives the English word cloister.

How do you pronounce claustrophobia?

Say it klaw-struh-FOH-bee-uh, with the stress on “FOH”. Wiktionary gives the American pronunciation as /ˌklɔː.strəˈfoʊ.bi.ə/ and the British one as /ˌklɒs.trəˈfəʊ.bi.ə/.

What situations trigger claustrophobia?

Almost any place that feels closed, crowded or hard to leave. The NHS lists common triggers such as lifts, tunnels, tube trains, public toilets, rooms whose doors have to be locked, cars, planes and hotel rooms with sealed windows. In practice, people often describe:

• lifts and elevators, especially small or slow ones, and the fear of getting stuck;
• trains, planes and cars, above all when they are crowded or when you can’t step out;
• tunnels and underground spaces;
• crowds and queues, where the walls are people rather than bricks;
• MRI scanners, where you lie still inside a narrow tube for several minutes.

Even thinking about these situations can be enough to bring on the fear.

Claustrophobia and MRI scans

MRI is where claustrophobia meets medicine. In a cohort of more than 55,000 patients, Dewey et al. (Journal of Magnetic Resonance Imaging, 2007) found claustrophobic reactions in 2.1% of people scanned in a conventional scanner, and in 0.7% with a newer, quieter scanner with a shorter tube. The NHS advises telling the hospital staff before the day of your appointment, asking about a sedative well in advance, and notes that some centres offer open or upright MRI scanners.

What are the symptoms of claustrophobia?

Symptoms come on in the feared place, or just from imagining it. According to the NHS, some people feel mild anxiety while others have severe anxiety or a panic attack, with physical symptoms such as:

• a rapid heartbeat, sweating, trembling;
• shortness of breath or a feeling of tightness in the chest;
• a sensation of butterflies in the stomach, nausea, a need to go to the toilet;
• feeling confused or disorientated, or, in severe cases, detached from your body.

Then comes avoidance: taking the stairs, choosing an aisle seat, avoiding tunnels or underground trains, delaying a scan. The fear can feel overwhelming even when you know you are safe.

What causes claustrophobia?

There is no single known cause. The NHS explains that claustrophobia is often linked to a frightening experience in early childhood, such as being trapped or kept in a confined space, and that a child can also learn it from a parent who has it. Unpleasant experiences later in life, such as turbulence on a flight or being stuck in a tunnel between stations, can also trigger it. The MSD Manual notes that the causes of phobias in general are unknown.

Whatever started it, avoidance keeps it going: each escape brings relief, and the relief teaches you that escaping was necessary.

Exposure research by Craske et al. (Behaviour Research and Therapy, 2014) shows that new, safer learning happens when you stay and discover that what you expected (running out of air, being trapped forever) does not happen.

How common is claustrophobia?

Claustrophobia is one of the more common phobias:

• the NHS estimates that around 10% of people in the UK are affected by claustrophobia during their lifetime;
• across 25 surveys in 22 countries, about 7.4% of adults have had a specific phobia of any kind at some point in their life, usually starting in childhood (Wardenaar et al., Psychological Medicine, 2017);
• in a Swedish population study, situational phobias, the group that includes enclosed spaces, were found in 17.4% of women and 8.5% of men at the time of the survey (Fredrikson et al., Behaviour Research and Therapy, 1996).

Figures vary with the country and with how strictly a phobia is defined, so treat them as orders of magnitude.

Do I have claustrophobia? A quick self-check

This is not a test and it cannot diagnose anything. It follows the summary of the DSM-5-TR criteria for specific phobia in the MSD Manual, and only helps you decide whether to talk to a professional.

Tick what applies to you

I have felt a marked fear or anxiety about enclosed spaces for six months or more. Being in a lift, a tunnel, a crowded train or a small room almost always triggers that fear straight away. I avoid these places, or I get through them with intense fear. I feel the fear is out of proportion to the actual danger. The fear or the avoidance causes me real distress or gets in the way of my daily life, work, travel or medical care.

This is not a diagnosis. If you ticked most of these boxes, or if the fear bothers you, talk to your doctor or a therapist trained in CBT. Only a professional can assess a phobia.

How to overcome claustrophobia

The best-supported way to overcome claustrophobia is gradual exposure, the core of cognitive behavioural therapy: you approach enclosed spaces in small steps, stay long enough to learn that the feared outcome doesn’t happen, and repeat until lifts, trains or scanners feel manageable. The NHS lists CBT and exposure therapy among the treatments for claustrophobia.

It works well. In a randomised trial with 46 people with claustrophobia, Öst et al. (Behaviour Research and Therapy, 2001) found that about 80% were clinically improved after treatment, whether they had a single three-hour exposure session, five sessions of exposure or five sessions of cognitive therapy, against 18% on the waiting list.

Our step-by-step guide explains how to build a fear ladder, how long to stay, how often to practise and when to get help: How to overcome claustrophobia.

Can virtual reality help with claustrophobia?

Virtual reality lets you practise the first steps of a ladder (a lift, a corridor, a small room) whenever you are ready, with full control and an exit at any moment. Early studies by Botella et al. (Behaviour Research and Therapy, 1998) treated claustrophobia with VR exposure alone, with gains still present at follow-up; these were single-patient case studies, not trials. For specific phobias in general, a meta-analysis of 30 randomised trials found VR exposure as effective as real-life exposure (Carl et al., Journal of Anxiety Disorders, 2019). More in Why virtual reality works for phobias.