Other namesArachnephobia[1]
Though most arachnids are harmless, a person with arachnophobia may still panic or feel uneasy around one. Sometimes, even an object resembling a spider can trigger a panic attack in an arachnophobic individual. The above cartoon is a depiction of the nursery rhyme "Little Miss Muffet", in which the title character is "frightened away" by a spider.
TreatmentExposure therapy[2]

Arachnophobia is a specific phobia brought about by the irrational fear of spiders and other arachnids such as scorpions[3] and ticks. The word Arachnophobia comes from the Greek words arachne and phobia.

Signs and symptoms

People with arachnophobia tend to feel uneasy in any area they believe could harbour spiders or that has visible signs of their presence, such as webs. If arachnophobes see a spider, they may not enter the general vicinity until they have overcome the panic attack that is often associated with their phobia. Some people scream, cry, have emotional outbursts, experience trouble breathing, sweat and experience increased heart rates when they come in contact with an area near spiders or their webs. In some extreme cases, even a picture, a toy, or a realistic drawing of a spider can trigger intense fear.


Arachnophobia may be an exaggerated form of an instinctive response that helped early humans to survive[4] or a cultural phenomenon that is most common in predominantly European societies.[5]


See also: Scorpion sting, Spider bite, and Tick-borne disease

An evolutionary reason for the phobia remains unresolved. One view, especially held in evolutionary psychology, is that the presence of venomous spiders led to the evolution of a fear of spiders, or made acquisition of a fear of spiders especially easy. Like all traits, there is variability in the intensity of fear of spiders, and those with more intense fears are classified as phobic. Being relatively small, spiders do not fit the usual criterion for a threat in the animal kingdom where size is a factor, but they can have medically significant venom and/or cause skin irritation with their setae.[6] However, a phobia is an irrational fear as opposed to a rational fear.[3]

By ensuring that their surroundings were free from spiders, arachnophobes would have had a reduced risk of being bitten in ancestral environments, giving them a slight advantage over non-arachnophobes in terms of survival.[citation needed] However, having a disproportionate fear of spiders in comparison to other, potentially dangerous creatures[7] present during Homo sapiens' environment of evolutionary adaptiveness may have had drawbacks.[citation needed]

In The Handbook of the Emotions (1993), psychologist Arne Öhman studied pairing an unconditioned stimulus with evolutionarily-relevant fear-response neutral stimuli (snakes and spiders) versus evolutionarily-irrelevant fear-response neutral stimuli (mushrooms, flowers, physical representation of polyhedra, firearms, and electrical outlets) on human subjects and found that ophidiophobia (fear of snakes) and arachnophobia required only one pairing to develop a conditioned response while mycophobia, anthophobia, phobias of physical representations of polyhedra, firearms, and electrical outlets required multiple pairings and went extinct without continued conditioning while the conditioned ophidiophobia and arachnophobia were permanent.[8]

Psychiatrist Randolph M. Nesse notes that while conditioned fear responses to evolutionarily novel dangerous objects such as electrical outlets is possible, the conditioning is slower because such cues have no prewired connection to fear, noting further that despite the emphasis of the risks of speeding and drunk driving in driver's education, it alone does not provide reliable protection against traffic collisions and that nearly one-quarter of all deaths in 2014 of people aged 15 to 24 in the United States were in traffic collisions.[9] Nesse, psychiatrist Isaac Marks, and evolutionary biologist George C. Williams have noted that people with systematically deficient responses to various adaptive phobias (e.g. arachnophobia, ophidiophobia, basophobia) are more temperamentally careless and more likely to receive unintentional injuries that are potentially fatal and have proposed that such deficient phobia should be classified as "hypophobia" due to its selfish genetic consequences.[10][11][12][13]

A 2001 study found that people could detect images of spiders among images of flowers and mushrooms more quickly than they could detect images of flowers or mushrooms among images of spiders. The researchers suggested that this was because fast response to spiders was more relevant to human evolution.[14]


An alternative view is that the dangers, such as from spiders, are overrated and not sufficient to influence evolution.[attribution needed] Instead, inheriting phobias would have restrictive and debilitating effects upon survival, rather than being an aid. For some communities, such as in Papua New Guinea and Cambodia, spiders are included in traditional foods. This suggests arachnophobia may, at least in part, be a cultural, rather than genetic trait.[15][16]

Stories about spiders in the media often contain errors and use sensationalistic vocabulary, which could contribute to the fear of spiders.[17]


The fear of spiders can be treated by any of the general techniques suggested for specific phobias. The first line of treatment is systematic desensitization – also known as exposure therapy.[2] Before engaging in systematic desensitization, it is common to train the individual with arachnophobia in relaxation techniques, which will help keep the patient calm. Systematic desensitization can be done in vivo (with live spiders) or by getting the individual to imagine situations involving spiders, then modelling interaction with spiders for the person affected and eventually interacting with real spiders. This technique can be effective in just one session, although it generally takes more time.[18]

Recent advances in technology have enabled the use of virtual or augmented reality spiders for use in therapy. These techniques have proven to be effective.[19] It has been suggested that exposure to short clips from the Spider-Man movies may help to reduce an individual's arachnophobia.[20]


Arachnophobia affects 3.5 to 6.1 percent of the global population.[21]

See also


  1. ^ Patricia Bowen (ed.), Internal Medicine Words, Rayve Productions, 1997, p. 18.
  2. ^ a b Sperry, Len (2015). Mental Health and Mental Disorders: An Encyclopedia of Conditions, Treatments, and Well-Being [3 volumes]: An Encyclopedia of Conditions, Treatments, and Well-Being. ABC-CLIO. p. 430. ISBN 9781440803833.
  3. ^ a b "The Fear Factor: Phobias".
  4. ^ Friedenberg, J.; Silverman, G. (2005). Cognitive Science: An Introduction to the Study of Mind. SAGE. pp. 244–245. ISBN 1-4129-2568-1. Retrieved 2008-10-11.
  5. ^ Davey, G.C.L. (1994). "The "Disgusting" Spider: The Role of Disease and Illness in the Perpetuation of Fear of Spiders". Society and Animals. 2 (1): 17–25. doi:10.1163/156853094X00045.
  6. ^ Isbister, Geoffrey; White, Julian (April 2004). "Clinical consequences of spider bites: recent advances in our understanding". Toxicon. 43 (5): 477–92. doi:10.1016/j.toxicon.2004.02.002. PMID 15066408. Retrieved 7 December 2020.
  7. ^ Gerdes, Antje B.M.; Uhl, Gabriele; Alpers, Georg W. (2009). "Spiders are special: fear and disgust evoked by pictures of arthropods" (PDF). Evolution and Human Behavior. 30: 66–73. doi:10.1016/j.evolhumbehav.2008.08.005. Archived (PDF) from the original on 2022-10-09.
  8. ^ Öhman, Arne (1993). "Fear and anxiety as emotional phenomena: Clinical phenomenology, evolutionary perspectives, and information-processing mechanisms". In Lewis, Michael; Haviland, Jeannette M. (eds.). The Handbook of the Emotions (1st ed.). New York: Guilford Press. pp. 511–536. ISBN 978-0898629880.
  9. ^ Nesse, Randolph (2019). Good Reasons for Bad Feelings: Insights from the Frontier of Evolutionary Psychiatry. Dutton. pp. 75–76. ISBN 978-1101985663.
  10. ^ Nesse, Randolph; Williams, George C. (1994). Why We Get Sick: The New Science of Darwinian Medicine. New York: Vintage Books. pp. 212–214. ISBN 978-0679746744.
  11. ^ Nesse, Randolph M. (2005). "32. Evolutionary Psychology and Mental Health". In Buss, David M. (ed.). The Handbook of Evolutionary Psychology (1st ed.). Hoboken, NJ: Wiley. pp. 911–913. ISBN 978-0471264033.
  12. ^ Nesse, Randolph M. (2016) [2005]. "43. Evolutionary Psychology and Mental Health". In Buss, David M. (ed.). The Handbook of Evolutionary Psychology, Volume 2: Integrations (2nd ed.). Hoboken, NJ: Wiley. p. 1014. ISBN 978-1118755808.
  13. ^ Nesse, Randolph (2019). Good Reasons for Bad Feelings: Insights from the Frontier of Evolutionary Psychiatry. Dutton. pp. 64–74. ISBN 978-1101985663.
  14. ^ Öhman, A., Flykt, A., & Esteves, F. (2001). "Emotion drives attention: Detecting the snake in the grass". Journal of Experimental Psychology: 130 (3), 466–478.
  15. ^ Wagener, Alexandra L.; Zettle, Robert D. (2011). "Targeting Fear of Spiders With Control-, Acceptance-, and Information-Based Approaches" (PDF). The Psychological Record. 61 (1): 77–91. doi:10.1007/BF03395747. S2CID 44385538. Archived from the original (PDF) on 2011-06-14.
  16. ^ Ohman, A; Mineka, S (2001). "Fears, Phobias, and Preparedness: Toward an Evolved Module of Fear and Fear Learning" (PDF). Psychological Review. 108 (3): 483–522. doi:10.1037/0033-295X.108.3.483. PMID 11488376. Archived (PDF) from the original on 2022-10-09.
  17. ^ Mammola, Stefano; et al. (2022). "The global spread of misinformation on spiders". Current Biology. 32 (16): R871–R873. doi:10.1016/j.cub.2022.07.026. hdl:10400.3/6470. PMID 35998593. S2CID 251727654.
  18. ^ Ost, L. G. (1989). "One-session treatment for specific phobias". Behaviour Research and Therapy. 27 (1): 1–7. doi:10.1016/0005-7967(89)90113-7. PMID 2914000.
  19. ^ Bouchard, S.; Côté, S.; St-Jacques, J.; Robillard, G.; Renaud, P. (2006). "Effectiveness of virtual reality exposure in the treatment of arachnophobia using 3D games". Technology and Healthcare. 14 (1): 19–27. PMID 16556961.
  20. ^ Gabe Friedman (April 25, 2019). "Israeli Researchers: "Spider Man" movies decrease Spider Phobia". Arutz Sheva. Retrieved April 25, 2019.
  21. ^ Schmitt, WJ; Müri, RM (2009). "Neurobiologie der Spinnenphobie". Schweizer Archiv für Neurologie. 160 (8): 352–355. Archived from the original on 23 August 2016.