Dengue Encephalitis Essay

638 words - 3 pages

Neuroimaging findings in dengue encephalitis are nonspecific, however occasionally it may provide additional clues for the diagnosis of dengue encephalitis. In dengue encephalitis, brain MRI can be normal or show focal parenchymal abnormalities [14]. Diffuse cerebral oedema is the the most common finding in dengue CNS infection. [6] Focal parenchymal change is the other major findings. Meningeal enhancement on post-contrast MRI has also been reported occasionally as well. [6] Cerebellar involvement in dengue infection is very rare. There are few previous reports describing cerebellar involvement in dengue infection. [22, 23, 24] In few cases cerebellar syndrome was result of post infectious acute disseminated demyelination. [23]. Small series from Sri Lanka reported three cases with cerebellar syndrome associated with dengue infection. Two of the patients were probably post infectious, while one possibly had acute infective cerebellitis and imaging in this patient showed symmetrical hyperintense lesions in the cerebellar hemispheres on T2W images. [24] Recent reports have also shown symmetrical involvement of the cerebellar hemispheres along with involvement of midbrain, thalamus and medial temporal regions in dengue encephalitis. Dengue cerebellitis is also supported by pathological studies showing presence of viral antigen in the cerebellar granular layer and purkinje cells. [15, 21]
On imaging lesions have usually been described as hyperintense on T2W images and hypointense on T1w images. Diffusion weighted imaging and susceptibility weighted imaging have not been systematically evaluated in cases of Dengue encephalitis. In our series, lesions showed restricted diffusion in 3 patients, facilitated diffusion was seen in 2 patients and in the remaining 2 patients combination of restricted and facilitated diffusion was seen. Increased blood brain barrier permeability is one of the hallmarks of dengue infection. This results in vasogenic edema which manifests as facilitated diffusion on DWI. However restricted diffusion seen on DWI may be attributed to presence of inflammatory cells, associated...

Find Another Essay On dengue encephalitis

Asian Tiger Mosquito Essay

776 words - 4 pages . Benefits and Threats: The threat the Asian Tiger Mosquito has on humans and other organisms is its’ ability to spread diseases. One bite can cause a dog to get heartworm disease or a human to get West Nile. This invasive species has been known to vector infectious diseases such Dengue Fever in Southeast Asia, Yellow Fever, and La Crosse encephalitis. There are not many other threats except that this species can have a negative effect on human

Control Water Borne Vectors in Georgia and the World

702 words - 3 pages limited to West Nile Virus, Malaria, Yellow Fever, Dengue, and Onchocerciasis. These are transmitted particularly by Mosquitos and Blackflies, both of which can be found in Georgia. According to data reported for Georgia to the Centers for Disease Control and Prevention, there were 339 cases of West Nile virus from 2002 - 2012 (Centers, 2013) and 99 cases of Malaria during 2011 alone (Cullen, 2013). West Nile Virus is an arthropod-borne virus that can

Disease Effect Settling in Communities

860 words - 4 pages , yellow fever, dengue, and encephalitis. Granaries and sewers stirred with rats that carried typhus, relapsing fever, hemorrhagic fevers, and perhaps bubonic plague. Householders caught toxoplasmosis parasites from pet cats. Leptospirosis infection from dogs gave humans a deadly form of meningitis" (Man and Microbes 52). Overcrowding is was a problem because people did not realize how dangerous being dirty is to one’s health. Once people started

How Global Warming Will Affect Human Health

1263 words - 5 pages hot room react to provocation with greater hostility. Diseases: Global warming may increase the risk of some infectious diseases, like malaria, dengue fever, yellow fever, and encephalitis. These diseases are spread by mosquitoes and other insects, and could become more common if a rise in temperature allows those insects to live farther north. Also, the increase in rainfall that is likely to occur with an increase in global

The Effects of Climate Change

1198 words - 5 pages and distribution of disease vectors will certainly be affected by global climate. Even though some of these vector populations may disappear, others may expand into new geographic areas. Among the many vector-borne diseases likely to be affected are malaria, dengue and plague to mention a few (Khasnis and Nettleman, 2005). The most susceptible to these factors and/or conditions, are the homeless. Within the last 5 years, about 5 to 8 million

Climate Change

1778 words - 8 pages 46). Hotter, longer, drier summers punctuated by heavy rainstorms may create favorable conditions for frequent outbreaks of mosquito borne disease such as West Nile virus. The incidence of other mosquito-borne diseases, including malaria, dengue, and viral encephalitis, will increase also, as they are among those most sensitive to climate. In addition, increases in sea surface temperature and sea level can lead to higher incidence of

global warming greatest threats to challenge the capabilities of mankind

1575 words - 6 pages insects to live farther north. These diseases include malaria, dengue fever, yellow fever, and encephalitis. Some scientists believe that algal blooms could occur more frequently as temperatures warm particularly in areas with polluted waters. Which could cause diseases such a cholera that accompany algal blooms could become more frequent. In retrospect the effects of Global Warming are real problems, which the people of this planet must face. The


2739 words - 11 pages during the bite. Not a word about the grave diseases that could be caught from the mosquito: West Nile, encephalitis, yellow fever, dengue, malaria, etc. Despite an occasional case of malaria and yellow fever in non-tropical locations like Michigan and New York City, and the spread of West Nile virus across parts of the United States, most people in temperate climates view mosquitoes as a nuisance.MalariaThe Disease ItselfMalaria is one of the

Government Testing on Human Subjects and the Intricacies of Informed Consent

2478 words - 10 pages attacks of tertiary syphilis—which can incorporate tumors, severe coronary disease, blindness, paralysis and death. In 1956 and 1957, U.S. Armed bio-warfare research trials were directed on the urban communities of Savannah, Georgia and Avon Park, Florida. In the trials, Army analysts discharged a large number of contaminated mosquitoes on the two towns to check whether the bugs could conceivably spread yellow fever and dengue fever. Several

Abrupt Climate Change

2510 words - 11 pages punctuated by heavy rainstorms may create favorable conditions for frequent outbreaks of mosquito borne disease such as West Nile virus. The incidence of other mosquito-borne diseases, including malaria, dengue, and viral encephalitis, will increase also, as they are among those most sensitive to climate. In addition, increases in sea surface temperature and sea level can lead to higher incidence of water-borne infections and toxin-related

Global Warming: Is Mankind to Blame?

2125 words - 9 pages , which are dispersed to humans from arachnid and insect-vectors such as ticks and mosquitos (Longstreth). Simultaneously, the growth of fish killing algae will increase in warmer waters because of global warming (Pinholster).” If surface temperatures jump by 2 degrees C over the next century…malaria, dengue, yellow fever, encephalitis, and cholera will run rampant” (Pinholster). However, the most instantaneous drawback of rising global

Similar Essays

Role Of Toll Like Receptors In Detecting Flaviviruses

2660 words - 11 pages flavirus, but the most well known and dangerous are West Nile virus, Dengue virus, Yellow fever, and Tick-borne encephalitis. These viruses all have similar symptoms: fever, headache and malaise. In severe cases these viruses can cause encephalitis, which is swelling of the brain, and hemorrhagic fever, which is severe fever which causes capillaries to hemorrhage and cause internal bleeding [2]. Since these last two symptoms are serious and could even

Global Warming: Implications On Public Health

2872 words - 11 pages . Diseases such as dengue, malaria, yellow fever, encephalitis, and cholera which usually spare the Americas could be moving North. Cases of such diseases are popping up as far north as New York and Canada striking fear and genuine concern. Models have lead to projections of potential outbreaks of such diseases in industrialized nations. Many say that a warm climate could be what makes the difference. Others still fear not a plague resulting from

Mosquitoes Through History Essay

2751 words - 11 pages No man or beast has caused more human deaths than the dreaded mosquito. Scientists estimate that malaria alone has killed about one half of all the humans who have ever lived on Earth. With the diseases these vectors transmit including dengue, encephalitis and yellow fever, the mosquito is responsible for millions of deaths every year. It is no surprise that the World Health Organization declared these pests as "public health enemy number one

Global Warming: The Greenhouse Effect By Asif

550 words - 2 pages greenhouse gas emissions are natural (mostly water vapour); only 2% are from man-made sources.If this process (The Greenhouse Effect) continues, we will be facing some serious danger: floods, increase in heat-stress mortality, an estimated 50cm raise on the sea level, shortage of clean drinkable water, shortage of land for people to live in, increase in diseases like dengue, yellow fever, malaria and encephalitis, increased chance of fire, disease