Malaria,hepatitis,elephantiasis,dengue information
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Malaria is a mosquito-borne infectious disease affecting humans and other animals caused by parasitic protozoans (a group of single-celled microorganisms) belonging to the Plasmodium type.[2] Malaria causes symptoms that typically include fever, tiredness, vomiting, and headaches.[1] In severe cases it can cause yellow skin, seizures, coma, or death.[1] Symptoms usually begin ten to fifteen days after being bitten.[2] If not properly treated, people may have recurrences of the disease months later.[2] In those who have recently survived an infection, reinfection usually causes milder symptoms.[1] This partial resistance disappears over months to years if the person has no continuing exposure to malaria.[1]
Hepatitis is inflammation of the liver tissue.[3] Some people have no symptoms whereas others develop yellow discoloration of the skin and whites of the eyes, poor appetite, vomiting, tiredness, abdominal pain, or diarrhea.[1][2] Hepatitis may be temporary (acute) or long term (chronic) depending on whether it lasts for less than or more than six months.[1][5] Acute hepatitis can sometimes resolve on its own, progress to chronic hepatitis, or rarely result in acute liver failure.[6] Over time the chronic form may progress to scarring of the liver, liver failure, or liver cancer.[3]
Elephantiasis is the enlargement and hardening of limbs or body parts due to tissue swelling.[1][2] It is characterised by oedema, hypertrophy, and fibrosis of skin and subcutaneous tissues, due to obstruction of lymphatic vessels.[2] It may affect the genitalia.[2] The term elephantiasis is often used in reference to (symptoms caused by) parasitic worm infections,[1][2] but may refer to variety of diseases where parts of a person's body swell to massive proportions.[2]
Dengue fever is a mosquito-borne tropical disease caused by the dengue virus.[1] Symptoms typically begin three to fourteen days after infection.[2] This may include a high fever, headache, vomiting, muscle and joint pains, and a characteristic skin rash.[1][2] Recovery generally takes two to seven days.[1] In a small proportion of cases, the disease develops into the life-threatening dengue hemorrhagic fever, resulting in bleeding, low levels of blood platelets and blood plasma leakage, or into dengue shock syndrome, where dangerously low blood pressure occurs.[2]