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Drugs and diseases reference index

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Diseases & conditions A-Z List

Diseases & Conditions A-Z List - «I»:

  1. Intrinsic factor Intrinsic factor
    Intrinsic factor is a protein produced by cells in the stomach lining. It is needed for the intestines to absorb vitamin B12 efficiently. Information In a disease called pernicious anemia, immune system damage to the stomach lining can cause a lack (deficiency) of intrinsic factor. Pernicious anemi...
  2. Intussusception - children Intussusception - children
    Intussusception is the sliding of one part of the intestine into another. This article focuses on intussusception in children. Causes Intussusception is caused by part of the intestine being pulled inward into itself. This can block the passage of food through the intestine. If the blood supply is ...
  3. Iodine in diet Iodine in diet
    Iodine is a trace mineral and an essential nutrient found naturally in the body. Function Iodine is needed for the normal metabolism of cells. Metabolism is the process of converting food into energy. Humans need iodine for normal thyroid function, and for the production of thyroid hormones. Foo...
  4. Iodine poisoning Iodine poisoning
    Iodine is a naturally occuring chemical. Small amounts are needed for good health. However, large doses can cause harm. Children are especially sensitive to the effects of iodine. NOTE: Iodine is found in certain foods. However, there is normally not enough iodine in foods to harm the body. This art...
  5. Ions Ions
    An ion is an atom or group of atoms that has an electric charge. Ions with a positive charge are called cations. Ions with a negative charge are called anions. Many normal substances exist in the body as ions. Common examples include sodium, potassium, calcium, chloride, and bicarbonate. (See: Elect...
  6. Iontophoresis Iontophoresis
    Iontophoresis is the passage of an electrical current onto the skin. Iontophoresis has a variety of uses in medicine. This article discusses the use of iontophoresis to turn off a particular sweat gland. Description The area to be treated is placed into water. A gentle current of electricity passes...
  7. IQ testing IQ testing
    Intelligence quotient (IQ) tests are a series of assessments used to determine the general intelligence of an individual in relation to other people the same age. Information Many IQ tests are used today, and whether they measure actual intelligence or simply certain abilities continues to be contr...
  8. Iris Iris
    The iris is the colored portion of the eye located between the cornea and lens. The iris' round, central opening (the pupil) contracts and dilates to control the entrance of light into the eye, allowing you to see well under a variety of lighting conditions....
  9. Iron deficiency anemia Iron deficiency anemia
    Anemia is a condition in which the body does not have enough healthy red blood cells. Red blood cells provide oxygen to body tissues. There are many types of anemia. Iron deficiency anemia is a decrease in the number of red cells in the blood caused by too little iron. See also: Iron deficiency anem...
  10. Iron deficiency anemia - children Iron deficiency anemia - children
    Anemia is a condition in which the body does not have enough healthy red blood cells. Red blood cells bring oxygen to body tissues. There are many types of anemia. Iron deficiency anemia is a decrease in the number of red blood cells in the blood due to a lack of iron. This article focuses on iron d...
  11. Iron in diet Iron in diet
    Iron is a mineral found in every cell of the body. Iron is considered an essential mineral because it is needed to make part of blood cells. Function The human body needs iron to make the oxygen-carrying proteins hemoglobin and myoglobin. Hemoglobin is found in red blood cells and myoglobin is foun...
  12. Iron overdose Iron overdose
    Iron is a mineral found in many over-the-counter supplements. Iron overdose occurs when someone accidentally or intentionally takes more than the normal or recommended amount of this medication. This is for information only and not for use in the treatment or management of an actual poison exposure....
  13. Irradiated foods Irradiated foods
    Irradiation is the use of radiation from x-rays or radioactive materials to kill bacteria. It is used to sterilize food, but does not make the food itself radioactive. The benefits of irradiating food includes the ability to control insects and bacteria, such as salmonella. The process can give food...
  14. Irregular sleep-wake syndrome Irregular sleep-wake syndrome
    Irregular sleep-wake syndrome is sleeping without any real schedule. Causes Some people have an irregular sleep-wake pattern because of a problem with brain function, the body's internal clock (circadian pacemaker), or other reasons. This disorder is very uncommon. It typically occurs in someone wi...
  15. Irritability Irritability
    Irritability is an excessive response to stimuli. Considerations The term "irritability" is used for infants and young children who, when ill, are especially fussy, whiny, and fretful, despite attempts at comforting and soothing them. Parents are usually very aware of their child's normal behavior ...