Dizziness

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Dizziness
ICD-10R42
ICD-9780.4
DiseasesDB17771
MedlinePlus003093
eMedicineneuro/693
MeSHD004244
 
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Dizziness
ICD-10R42
ICD-9780.4
DiseasesDB17771
MedlinePlus003093
eMedicineneuro/693
MeSHD004244

Dizziness is an impairment in spatial perception and stability.[1] Because the term dizziness is imprecise,[2] it can refer to vertigo, presyncope, disequilibrium,[3] or a non-specific feeling such as giddiness or foolishness.[4]

One can induce dizziness by engaging in disorientating activities such as spinning.

A stroke is the cause of isolated dizziness in 0.7% of people who present to the emergency room.[5]

Classification[edit]

Dizziness is broken down into 4 main subtypes: vertigo (~50%), disequilibrium (less than ~15%), presyncope (less than ~15%) and lightheadedness (~10%).[6]

Differential diagnosis[edit]

Many conditions are associated with dizziness. However, the most common subcategories can be broken down as follows: 40% peripheral vestibular dysfunction, 10% central nervous system lesion, 15% psychiatric disorder, 25% presyncope/dysequilibrium, and 10% nonspecific dizziness.[7] The medical conditions that often have dizziness as a symptom include:[7][8][9][10]

Mechanism[edit]

Many conditions cause dizziness because multiple parts of the body are required for maintaining balance including the inner ear, eyes, muscles, skeleton, and the nervous system.[9]

Common physiological causes of dizziness include:

Epidemiology[edit]

About 20–30% of the population report to have experienced dizziness at some point in the previous year.[5]

See also[edit]

References[edit]

  1. ^ "dizziness" at Dorland's Medical Dictionary
  2. ^ Dizziness at the US National Library of Medicine Medical Subject Headings (MeSH)
  3. ^ Reeves, Alexander G., Swenson, Rand S. (2008). "Chapter 14: Evaluation of the Dizzy Patient". Disorders of the Nervous System: A Primer. Dartmouth Medical School. 
  4. ^ a b Branch, Jr, William T., Barton, Jason (February 10, 2011). "Approach to the patient with dizziness". UpToDate. 
  5. ^ a b c Neuhauser HK, Lempert T (November 2009). "Vertigo: epidemiologic aspects". Semin Neurol 29 (5): 473–81. doi:10.1055/s-0029-1241043. PMID 19834858. 
  6. ^ Post RE, Dickerson LM (August 2010). "Dizziness: a diagnostic approach". Am Fam Physician 82 (4): 361–8, 369. PMID 20704166. 
  7. ^ a b Chan Y (June 2009). "Differential diagnosis of dizziness". Curr Opin Otolaryngol Head Neck Surg 17 (3): 200–3. doi:10.1097/MOO.0b013e32832b2594. PMID 19365263. 
  8. ^ Tusa RJ (March 2009). "Dizziness". Med. Clin. North Am. 93 (2): 263–71, vii. doi:10.1016/j.mcna.2008.09.005. PMID 19272508. 
  9. ^ a b c d e f g "Dizziness and Vertigo". Merck Manual. 2009. 
  10. ^ Bronstein AM, Lempert T (2010). "Management of the patient with chronic dizziness". Restor. Neurol. Neurosci. 28 (1): 83–90. doi:10.3233/RNN-2010-0530. PMID 20086285. 
  11. ^ O'Connor RE, Brady W, Brooks SC, et al. (November 2010). "Part 10: acute coronary syndromes: 2010 American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care". Circulation 122 (18 Suppl 3): S787–817. doi:10.1161/CIRCULATIONAHA.110.971028. PMID 20956226. 

External links[edit]