Neurological Disorders Topic Homepage
Neurological Disorders Overview
Neurology is the branch of medicine dealing with all diseases of the nervous system, including those of the brain, spinal cord and nerves.1
The nervous system is a highly specialised and complex structure.2 It is an information-processing system that regulates all physiological functions of the body.2 When a disease affects this system, it can result in difficulty moving, speaking, breathing or ...
There are more than 600 neurological disorders; the most common are Alzheimer's disease (dementia), Parkinson's disease, migraine and epilepsy.3
Alzheimer's disease is a neurodegenerative disease that causes progressive and irreversible loss of mental functions, such as memory, language, orientation and judgment.3 Usually diagnosed from the age of 65, it is the leading cause of dementia and dependency in elderly, and affected about 24 million people worldwide in 2005 according to the World Health Organisation.3
Parkinson's disease is a neurodegenerative disease characterised by tremors when muscles are at rest, slowness of voluntary movements and increased muscle tone (rigidity).4 It is often diagnosed after 65 and affects 1% of people of this age bracket.4
Migraine is one of the most prevalent neurological disorders, affecting up to 18% of the population.5 Migraine is characterised by attacks of severe unilateral head pain, associated with nausea, vomiting, phonophobia, and photophobia.5
Epilepsy is a chronic neurological disorder affecting both sexes, regardless of age or country of origin.3 Epilepsy consists a set of neurological conditions characterised by the occurrence of at least one epileptic seizure.6 Epileptic seizure is a sudden symptom, characterized by abnormal brain hyperactivity. It may manifest as seizures or unconsciousness, or even visual or auditory hallucinations.6
Neurological diseases, especially neurodegenerative diseases like Alzheimer's or Parkinson's disease, remain incurable with a poorly understood etiology. With the population aging, neurological diseases are a major health problem, particularly for developing countries where life expectancy increases dramatically.3 Studies are ongoing to identify risk factors that would allow better prevention of neurological diseases, pending the development of effective treatments.3
1. Reinhard Rohkamm R. Color atlas of neurology. Thieme editionedition. 2004 : 440 pages.
2. Michael-Titus A. et al. The nervous system. Elsevier Editionedition. 2007 : 371 pages.
3. World Health Organization. Neurological disorders: Ppublic health challenges. WHO editionedition. 2006 : 218 pages. Available online.
4. Beers M.H. et al. The Merck manual of medical information. Merck research laboratories. Second home edition. 2003, : 431-96.
5. Zaza Katsarava Z. The many facets of migraine. The Lancet Neurology. July 2011 ; 10 (7) : 607.
6. Fisher R.S. et al. Eepileptic seizures and epilepsy: Ddefinitions proposed by the International League Against Epilepsy (ILAE) and the International Bureau for Epilepsy (IBE). Epilepsia. 2005 ; 46 (4) : 470–472.
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Neurological Disorders Drug Data - A-Z
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