MediHealth
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Dehydration
Updated: Dec 21, 2009 - 10:36You get dehydration if your body doesn't get enough water. It can make you feel very ill, especially if you have certain illnesses, like diabetes. When you sweat you lose water, so it is also easy to get dehydrated when it's hot. Your body's way of telling you that you need more water is to make ...
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Dental caries
Updated: Jan 25, 2010 - 15:31Dental caries, also called tooth decay, are when you get a hole in the outside layer of your tooth – the enamel - which then continues through the dentin. This can be painful because it leaves the inside part of your tooth, where the nerves are, exposed. Dental caries are caused by bacteria on yo...
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Dental check-up
Updated: Jan 25, 2010 - 15:16A dental check-up is when you go to see your dentist so he can check that your teeth are healthy and clean. If he or she sees any problems they will make another appointment to fix it. You should make sure that you go for a dental check-up every 6 months to check that you don’t get any cavities o...
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Dental filling
Updated: Jan 25, 2010 - 16:00A dental filling is when your dentist fills up a hole (also called a cavity) in your teeth caused by tooth decay. Your dentist will use a special type of plastic or metal to fill up the hole and replace the enamel that is missing. Sometimes, your doctor may have to remove part of the decay with s...
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Dentin
Updated: Jan 25, 2010 - 15:28Dentin is the main part of your teeth. It’s the softer part on the inside of your teeth, which supports the enamel. If you get a cavity or carry, it may start to hurt because the nerves on the inside of your teeth can become exposed quickly. The best way to prevent this from happening is to br...
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Depression
Updated: Dec 04, 2009 - 09:58Depression is a mental condition that affects the way you think, feel and behave. Mental means related to the mind or brain, and disorder means something isn’t working as well as it should. So, if you have depression, your brain isn’t working as well as it should. Normally, neurons in your fr...
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Dermis
Updated: Nov 17, 2009 - 13:15The dermis is the middle layer of your skin. It grows the hair that helps keep your body warm, and also contains sweat glands, which help you sweat, so you can cool down on a hot day. The dermis contains a huge network of nerves that covers your entire body. When you touch something, these nerves...
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Diabetes
Updated: Sep 24, 2009 - 10:20Diabetes is a disease in which your body can't control the amount of fuel in your blood. Just as a car is powered by petrol, you are powered by glucose, which is extracted from food in your gastrointestinal tract. Insulin normally gets the glucose from the bloodstream to where it’s needed in the ...
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Diabetic ketoacidosis
Updated: Nov 23, 2009 - 14:07Diabetic ketoacidosis (or DKA) is a serious condition caused by ketones building up in your blood. This is a problem because if a lot of ketones build up in your bloodstream they can be poisonous and make your blood become acidic. This usually happens if you have type 1 diabetes that isn’t being ...
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Dialysis
Updated: Dec 21, 2009 - 14:38Dialysis does the filtering job of damaged kidneys - a dialysis machine is like an artificial kidney. A small needle is put into your arm, and blood passes through this and out of your body into a tube. The tube runs into the dialysis machine, and wastes like urea and creatinine are removed i...
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