Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «I»:
Intolerance, food: Difficulty in digesting a
food. Common offenders include milk products, wheat and
other grains that contain gluten, and foods that tend to
cause intestinal gas, such as cabbage or beans. Food
intolerance is often mistaken for food allergy, but does
not involve a histamine res...
Intolerance, lactose: The inability to digest lactose, a
sugar component of milk and most other dairy products. Lactose is
sometimes also used as an ingredient in other foods, so those with a
lactase deficiency should check labels carefully. The basis for this
condition is lack of an enzyme in ...
Intra-arterial pressure: The pressure of the blood
within an artery, the arterial pressure. Also called the arterial tension....
Intracellular: Within a cell. In contrast to extracellular, meaning outside a cell....
Intracerebral hematoma: Bleeding within the brain. Diagnosis is usually by MRI or CAT scan. Treatment is by surgery.
Intracorporeal: Within the body or any structure anatomically called the corpus. For example, when men with erectile dysfunction fail intracorporeal (penile) injection therapy, sildenafil (Viagra) alone or added to the injection regimen may prove effective. From intra- + corpus, meaning body.
Intracranial: Within the cranium, the bony dome that houses and protects the brain.
An intracranial hemorrhage is bleeding within the cranium due, for example, to a stroke or leakage of blood from an aneurysm in the brain. The intracranial pressure is the pressure on brain and the cerebrospinal flu...
Intracranial hematoma: A hematoma (a collection of blood) within the cranium (skull). The bleed may or may not be within the brain itself.
See: Epidural hematoma; Subdural hematoma; Intracerebral hematoma....
Intractable: Unstoppable. For example, intractable diarrhea or
intractable pain. ...
Intracytoplasmic sperm injection (ICSI)
Intracytoplasmic sperm injection (ICSI): A test-tube fertilization procedure in which a sperm is injected directly into an egg to achieve fertilization. ICSI is done for male infertility.
Babies conceived by ICSI have no more major birth defects or delays in development than children conceived by n...
Intradermal: In or into the skin. An intradermal injection is given into the skin.
Intradermal tests are a type of skin test. An agent (such as pollen) is injected into the skin to test the reaction to it. Intradermal tests are much used to diagnose allergy and to test cellular immunity.
The most su...
Intradiskal electrothermal therapy
Intradiskal electrothermal therapy: A procedure designed to relieve back pain due to damage to the disks between the spine bones. Called IDET for short.
Under local anesthesia and X-ray guidance, a needle is introduced into the disk and a catheter with a heating coil is inserted through the needle....
Intraductal carcinoma: Also called ductal carcinoma in situ. See: DCIS....
Intraductal papilloma: A benign, wart-like growth that occurs in breast ducts....
Intraepithelial: Within the layer of cells that forms the surface
or lining of an organ....