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Infection
(in-FEK-shun)
The invasion and growth of germs in the body. The germs may be bacteria, viruses, yeast, fungi, or other microorganisms. Infections can begin anywhere in the body and may spread all through it. An infection can cause fever and other health problems, depending on where it occurs in the body. When the body’s immune system is strong, it can often fight the germs and cure an infection. Some cancer treatments can weaken the immune system, which may lead to infection.
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Infectious disease
A disease caused by germs; one that can be passed from one to another. Cancer is not an infectious disease.
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Infertility
(IN-fer-TIH-lih-tee)
The inability to produce children.
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Inflammation
(IN-fluh-MAY-shun)
Redness, swelling, pain, and/or a feeling of heat in an area of the body. This is a protective reaction to injury, disease, or irritation of the tissues.
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Inflammatory
(in-FLA-muh-TOR-ee)
Having to do with inflammation (redness, swelling, pain, and a feeling of heat that helps protect tissues affected by injury or disease).
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Informed consent
(in-FORMD kun-SENT)
A process in which patients are given important information, including possible risks and benefits, about a medical procedure or treatment, a clinical trial, or genetic testing. This is to help them decide if they want to be treated, tested, or take part in the trial. Patients are also given any new information that might affect their decision to continue. Also called consent process.
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Infusions
(in-FYOO-zhun)
The introduction of a fluid into a vein.
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Ingestion
(in-JES-chun)
Taking into the body by mouth.
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Inhalation
(IN-huh-LAY-shun)
In medicine, refers to the act of taking a substance into the body by breathing.
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Inherited
(in-HAYR-ih-ted)
In medicine, describes the passing of genetic information from parent to child through the genes in sperm and egg cells. Also called hereditary.
