Aquaphobia is considered a Specific Phobia of natural environment type in the Diagnostic and Statistical Manual of Mental Disorders. A specific phobia is an intense fear of something that poses little or no actual danger. 
A study of epidemiological data from 22 low, lower-middle, upper-middle and high-income countries revealed "fear of still water or weather events" had a prevalence of 2.3%, across all countries, in the US the prevalence was 4.3%.  In an article on anxiety disorders, Lindal and Stefansson suggest that aquaphobia may affect as many as 1.8% of the general Icelandic population, or almost one in fifty people. 
Manifestation for AquaphobiaEdit
Specific phobias are a type of anxiety disorder in which a person may feel extremely anxious or has a panic attack when exposed to the object of fear. Specific phobias are a common mental disorder.
Psychologists indicate that aquaphobia manifests itself in people through a combination of experiential and genetic factors. In the case of a 37 year old media professor, he noted that his fear initially presented itself as a, "severe pain, accompanied by a tightness of his forehead," and a choking sensation, discrete panic attacks and a reduction in his intake of fluids. 
The correct Greek-derived term for "water-fear" is hydrophobia, from ὕδωρ (hudōr), "water" and φόβος (phobos), "fear". However, this word has long been used in English to refer specifically to a symptom of later-stage rabies, which manifests itself in humans as difficulty in swallowing, fear when presented with liquids to drink, and an inability to quench one's thirst.
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- Dorland's Illustrated Medical Dictionary. Elsevier. 2011. p. 122.
- "Anxiety disorders". Office on Women's Health. US Department of Health and Human Services. Retrieved 20 November 2019. This article incorporates text from this source, which is in the public domain.
- Wardenaar, K. J.; Lim, C. C. W.; Al-Hamzawi, A. O.; Alonso, J.; Andrade, L. H.; Benjet, C.; Bunting, B.; de Girolamo, G.; Demyttenaere, K.; Florescu, S. E.; Gureje, O. (2017). "The cross-national epidemiology of specific phobia in the World Mental Health Surveys". Psychological Medicine. 47 (10): 1744–1760. doi:10.1017/S0033291717000174. ISSN 1469-8978. PMC 5674525. PMID 28222820.
- Líndal, E.; Stefánsson, J. G. (1993). "The lifetime prevalence of anxiety disorders in Iceland as estimated by the US National Institute of Mental Health Diagnostic Interview Schedule". Acta Psychiatrica Scandinavica. 88 (1): 29–34. doi:10.1111/j.1600-0447.1993.tb03410.x. ISSN 0001-690X. PMID 8372693.
- "Phobia - simple/specific". MedlinePlus. Retrieved 20 November 2019. This article incorporates text from this source, which is in the public domain.
- Lynne L. Hall, Fighting Phobias, the Things That Go Bump in the Mind, FDA Consumer Magazine, Volume 31 No. 2, March 1997
- Ajinkya. "Cognitive Hypnotherapy for Panic disorder with Aquaphobia". Sleep and Hypnosis. 17.
- ὕδωρ, Henry George Liddell, Robert Scott, A Greek-English Lexicon, on Perseus
- φόβος, Henry George Liddell, Robert Scott, A Greek-English Lexicon, on Perseus