Fobias
Revisado por Dr Colin Tidy, MRCGPÚltima atualização por Dr Hayley Willacy, FRCGP Last updated 18 Fev 2025
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Uma fobia é um medo intenso ou pavor de uma coisa ou evento, que é desproporcional à realidade da situação. O tratamento mais eficaz é a terapia cognitivo-comportamental. Medicamentos antidepressivos também ajudam em muitos casos.
At a glance
A phobia is an intense fear of a situation or object.
Symptoms include anxiety, distress, sweating, and a fast heartbeat.
You may also feel anxious by just thinking about the feared situation.
Common phobias include social anxiety disorder and agoraphobia.
Treatments can include cognitive behavioural therapy (CBT) or antidepressants.
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Phobia symptoms
Anxiety or distress. If you come near to, or into contact with, the feared situation you become anxious or distressed. In addition you may also have one or more unpleasant physical symptoms. Read more about anxiety symptoms.
Physical symptoms. The physical symptoms are partly caused by the brain which sends lots of messages down nerves to various parts of the body when you are anxious. For example, the palms of your hands may become sweaty.
Adrenaline exposure. In addition, you release stress hormones - such as adrenaline (epinephrine) - into the bloodstream when you are anxious. These can also act on the heart (make it beat fast), muscles and other parts of the body to cause symptoms.
Thought of a trigger can cause symptoms. You may even become anxious by just thinking of the feared situation. You end up avoiding the feared situation as much as possible, which can restrict your life and cause distress.
Types of phobia
Voltar ao conteúdoSocial anxiety disorder. This is also known as social phobia and it is possibly the most common phobia. See the separate leaflet called Social anxiety disorder for more details.
Agoraphobia. This too is common. Many people think that agoraphobia means a fear of public places and open spaces. But this is just part of it. If you have agoraphobia you tend to have a number of fears of various places and situations. See the separate leaflet called Agoraphobia for more details.
Other specific phobias. There are many other phobias of a specific thing or situation - for example:
Fear of confined spaces or of being trapped (claustrophobia).
Fear of certain creatures, for example, spiders (arachnophobia).
Fear of injections or needles (trypanophobia).
Fear of vomiting (emetophobia).
Fear of being alone (monophobia).
Fear of choking (pseudodysphagia).
Fear of the dentist (dentophobia).
Fear of flying (aerophobia).
Fear of holes (trypophobia).
Fear of the ocean (thalassophobia).
However, there are many others, and some are quite rare.
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Phobia treatment
Voltar ao conteúdoCognitive and behavioural therapies.
These therapies help you to change certain ways that you think, feel and behave.
They are useful treatments for various mental health problems, including phobias.
CBT usually works well to treat most phobias but does not suit everyone. However, it may not be available on the NHS in all parts of the UK. See the separate leaflet called Cognitive behavioural therapy (CBT) for more details.
Medicamentos antidepressivos
Antidepressivos are commonly used to treat depression.
However, they also help to reduce the symptoms of phobias (particularly agoraphobia and social phobia), even if you are not depressed.
There are different types of antidepressant. Selective serotonin reuptake inhibitor (SSRI) antidepressants are the ones most commonly used for anxiety and phobic disorders.
Benzodiazepinas. Benzodiazepínicos such as diazepam are sometimes called minor tranquilisers but they can have serious side-effects.
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Perguntas frequentes
What kind of physical feelings might I experience with a phobia?
When you are anxious due to a phobia, your brain sends many messages to different parts of your body. These signals can cause physical symptoms such as sweaty palms. You also release stress hormones like adrenaline, which can make your heart beat fast and affect your muscles and other body parts.
Can I feel anxious from a phobia even if I'm not directly facing the feared situation?
Yes, you might become anxious just by thinking about the situation or object you fear. This can lead you to avoid the feared situation as much as possible, which can then limit your life and cause distress.
Is Cognitive Behavioural Therapy (CBT) always effective for phobias?
CBT is generally a good treatment for most phobias, as it helps you change how you think, feel, and behave. However, it doesn't suit everyone. Additionally, its availability on the NHS might vary across different parts of the UK.
How do antidepressant medicines help with phobias if I'm not feeling depressed?
Antidepressant medicines, particularly selective serotonin reuptake inhibitors (SSRIs), are often used to treat depression. However, they can also help to lessen the symptoms of phobias, especially agoraphobia and social phobia, regardless of whether you are experiencing depression.
Are there any side-effects to taking benzodiazepines for phobias?
Benzodiazepines, sometimes referred to as minor tranquilisers, can have serious side-effects. This is an important consideration for anyone thinking about using them for phobia treatment.
Leitura adicional e referências
- Transtorno de ansiedade social: reconhecimento, avaliação e tratamento; Diretriz Clínica NICE (Maio 2013)
- Samra CK, Torrico TJ, Abdijadid S; Specific Phobia.
- Vadakkan C, Siddiqui W; Claustrophobia.
About the authorView full bio

Dr Hayley Willacy, FRCGP
Médico Generalista, Autor Médico
MBChB (1992), DRCOG, DFFP, MRCOG (Part 1) MRCGP (2007), DFSRH (2013), MSc - medical education (2020)
Dr Hayley Willacy was an NHS GP working in northwest England, who retired from clinical practice in 2022 after 30 years.
About the reviewerView full bio

Dr Colin Tidy, MRCGP
Médico Generalista, Autor Médico
MBBS, MRCGP, MRCP (Paediatrics), DCH
Dr Colin Tidy é um médico do NHS, baseado em Oxfordshire.
Histórico do artigo
As informações nesta página são escritas e revisadas por clínicos qualificados.
Próxima revisão prevista: 17 Fev 2028
18 Fev 2025 | Última versão

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