Answer: When a mosquito bites you, it injects proteins that inhibit your blood from clotting in the vicinity of the bite. It can then more easily withdraw blood. Some mosquitoes carry one or more infectious biological organisms, and they can inject you with them when they bite you. Malaria is probably the best known of the examples, and there are others like West Nile virus.
Answer: Only if you have not scratched it. You can cause a "redness/rash" at the site merely by scratching the bite and spreading the mosquito saliva around. If the swelling spreads out past a normal size (more than 1") then it is possible you are having an allergic reaction.
Answer: Actually, what happens is that mosquito bites can become slightly infected, leading to overactive scar production which end up looking somewhat like moles. These mole-like scars should not be removed, because the tissue may continue to overreact, making even bigger scars.
Answer: This is what I pulled from another site. "After the bite, some saliva of the mosquito remains on the wound. The proteins present in the saliva evoke an immune response in the body. The area that is bitten swells up and is called the wheal. After some time, the swelling goes away but the bitten area will continue to itch until the immune cells of the body break down the saliva proteins.
Answer: Malaria is an infectious disease caused by parasites. Humans catch malaria when that parasite enters their blood stream. The parasite that causes malaria is a protozoan called Plasmodium. They are very small organisms that have only one cell (but are larger and more complex than bacteria).
To answer your question, no, there are other ways to "catch" malaria. A baby can get it while inside its mother. This is called maternal-fetal transmission. People can also get malaria from a blood transfusion. This is when someone gives blood to another person. Another way people can catch malaria is by using a needle that someone with the disease used before them.
A few obvious ways to prevent infection are: controlling mosquitoes, keeping mosquitoes from biting, and taking medicine to keep from getting sick after a bite (most relevant to parts of the world where people can get malaria).
Answer: its something called plasma leakage. patient with just dengue didnt suffer plasma leakage, but the other with dengue hemorrhagic fever does. you can know whether someone get a plasma leakage from: 1. anamnese: difficult to breath (due to a pleural effusion), distended abdomen (due to an ascites) 2. phys. diagnostic: derivation of breathing sound, undulation test, edema, poor perfusion and shock sign 3. lab findings: hemoconsentration (higher Hb and PVC)
Answer: The cause of dengue is being bitten by a mosquito which has taken a blood meal from an infected carrier, usually human. Much the same as Malaria, which is only transmitted from human to human by the mosquito. West Nile Virus, EEE and other "flu like symptom" illnesses can be transmitter by mosquito from a human, bird, horse etc. The problem with Dengue is if you get it the second time it can be deadly. Check out CDC: See Related Links
Click on Florida to see how bad it really is. What we need is a non-toxic pesticide that also keeps repelling mosquitoes for more than a few hours.