Sexual Dictionary - letter I

Iatrogenic
a disorder that is a reaction to treatment by physicians (like infections transmitted during therapy). Disease induced by medical intervention.
Ichthyosis
congenital skin diseases that produces dry, rough, scaly skin.
Identical twins
twins formed from the same fertilized egg. They are of the same gender, have the same genetic makeup and closely similar appearance.
Also called monozygotic twins.
Idiopathic
disease or condition having no known cause.
ILGA
acronym for International Lesbian and Gay Association.
Immune
resistant to a particular disease due to either previous infection, immunization/ vaccination, or contact with the immunogen/ antigen. For example most people who get chicken pox as children are immune to chicken pox for the rest of their lives. There are vaccines that can make you immune to certain diseases, like hepatitis B. To be protected or safe from something.
Immune system
a complex system in the body made of a group of cells that all work together to defend and protect the body from enemies or invaders, fighting against potentially harmful substances like viruses, bacteria and other germs, in order to protect the body health. These cells can make the difference between the cells that are part of the body and those things that don't belong to the body.
Immunity
the condition in which an organism can resist disease due to natural or acquired resistance provided by the immune system to a specific disease. It generally follows natural infections and is the goal of vaccinations. There are two types of immunity :
  • active immunity - immunity acquired by the antibodies produced by the personís own immune system. This type of immunity can be brought about by a natural infection or by a vaccine. It is usually long lasting
  • passive immunity - immunity acquired by transfer of antibodies produced by other person's immune system, either naturally (from pregnant woman to her unborn child) or artificially (as by injection). It is effective but usually last few weeks to months
Immunity is indicated by the presence of specific antibodies in the blood and can be determined with a laboratory test.
Immunization
the process of inducing immunity to a specific infection or disease, typically delivered through a vaccination.
Immunofluorescence
immunologic test allowing the visualisation of a specific antigens that react with the antibody.
Immunoglobulin
a general term for blood proteins capable of acting as antibodies which bind to invading organisms, leading to their destruction. There are five classes of immunoglobulins : IgA, IgD, IgE, IgG, IgM.
Immunology
the branch of medicine that studies the immune system, its structure, function and disorders and laboratory techniques involving the interaction of antigens with specific antibodies. The specialist is called immunologist.
Immunotherapy
a treatment which activates the bodies own immune system to destroy or to enhance its resistance to disease.
Implantation
the proccess of attachment of the embryo to membrane that lines the uterus called endometrium, usually six to eight days after fertilization. Also called nidation. A normaly implantation it is in the lining of the uterus (endometrium). An abnormal implantation it is in other places than lining of the uterus (endometrium) - see ectopic pregnancy.
Impetigo
a very contagious skin infection characterized by erupting sores. It is caused by staphylococcus or streptococcus bacteria.
Impotence
the inability to achieve or maintain an erection in order to copulate. Impotence may have a physiological or psychological causes.
Also refered as erectile dysfunction.
Interstitial
the space between other structures or objects. Interstitial cells are cells found in the spaces between organs and other tissues and interstitial fluid is the fluid between organs and tissues, outside of the lymphatic or cardio vascular systems.
In situ
latin for "in original place" and usually refers to early stage of cancer that hasn't spread to other locations.
In vitro
latin for "in glass" and refers to laboratory biological experiments conducted in cell cultures grown in an artificial environment (in test tube). Outside a living organism.
In vitro fertilization
a method of woman infertility treatment that involves removing eggs from a womanís ovary and combining the egg with spermatozoon in the laboratory, therefore, fertilization takes place outside of the woman's body. Resulting embryos are later transferred to her uterus.
In vivo
latin for "in the body of a living organism" and refers biological experiments using human (or animal) subjects.
Incest
sexual intercourse between persons too closely related to marry, as between a parent and his child, between a brother and his sister.
Incision
a cut into a body tissue or organ, especially one made during surgery.
Incomplete abortion
an abortion in which the contents of the uterus are not completely expelled and some tissue remains inside the uterus.
Incontinence
the inability so control the muscles which control the passing of urine or faeces. The inability to control urination or defacation.
Incubation
time taken to develop.
Incubation period
the time period between the first day a person gets infected and the clinical manifestation of the symptoms of the infectious disease. The period of incubation is diffrent for any infectious agent and can be as short as a few days or more than 10 years. An infected person may feel perfectly healthy and show no symptoms during a disease's incubation period but still can pass the disease to another person.
Also called latent stage.
Indecent exposure
the display of parts of the human body without clothing in a manner that is contrary to local custom and law. What counts as "indecent exposure" varies according to place and time. Exposure of the breasts of an adult woman is considered indecent in some places, and not so in others. For example, in our days wearing no clothing over the chest or breasts it is not interpretated as an indecent exposure in some countries (e.g. from Africa), mean while in other countries this is alowed only in special places where nudity is acceptable - such as nude beaches, or places with special night programm ( topless) mean while in other countries (e.g. Afganistan) women are banned from going in public unless wearing a face-covering traditional clothing. In most places exposure of an adult's genitalia is the most blatant example of indecent exposure.
Indigestion
a common disorder of digestive function characterized by abdominal discomfort after meals - heartburn, nausea, bloating, gas, and uncomfortable fullness. It is caused by poor digestion due to eating high-fat foods, eating during stressful situations, eating too fast or overeating.
Also called upset stomach or dyspepsia.
Induration
the process of hardening of a normally soft tissue or organ, especially the skin, because of inflammation, infiltration of a neoplasm, or an accumulation of blood.
Infected
having undergone infection with a pathogenic microorganism or agent.
Infection
the pathological state resulting from the invasion of the body by pathogenic microorganisms bacteria, fungus or viruses. An active infection is one that leads to disease symptoms. A latent infection remains dormant within the body.
Infectious
capable to cause or spread a disease.
Infectious disease
a disease that can be transmitted from one individual to another, for example through sexual contact.
Infertility
inability to achieve conception after a year or more of regular sexual relations without the use a contraceptive. In woman inability to conceive or an inability to carry a pregnancy to a live birth, in man inability to impregnate.
Also called sterility.
Inflammation
a body tissue's protective response to injury, irritation or infection, characterized by swelling, redness, warmth and pain.
Inflammatory
characterized or caused by inflammation.
Influenza
a infectious and contagious viral respiratory illness usually occurring in the winter. It is characterized by characterized by inflammation of the respiratory tract and by fever, chills, muscular pain, headache, and prostration.
Also called grippe.
Inhibited sexual arousal
the inability to become sexually aroused by a partner manifested by a failure to initiate or be responsive to a partner's initiation of sexual activity. It is a complex situation because the causes can be both physical and psychical or combined factors. Relationship problems wherein one partner does not feel emotionally intimate or close to their mate, communication problems, lack of affection that is not associated with continuing into sexual intercourse, power struggles and conflicts, a lack of time alone together, a very restrictive upbringing concerning sex, negative attitudes toward sex, or negative or traumatic sexual experiences (such as rape, incest, or sexual abuse), physical illnesses, some medications, hormone deficiencies, depression and excessive stress are conditions that may inhibit sexual interest.
Inhibition
conscious or unconscious restraint of a behavioral process, a desire, or an impulse.
Injecting drug users
persone who use needles to inject drugs into her body. Drugs like heroin or cocaine can be injected into veins. Persons who share needles can get HIV or other blood borne infections like hepatitis B. The blood that gets into the needle or syringe from one person's body can then get into another person's body when they use the same needle. That risk can be eliminated by either not sharing needles or sterilizing them between uses.
Injection
method that consist in inserting liquid into the body with the use of a syringe and needle. A shot.
Inoculation
the introduction of a substance (a vaccine, serum or virus) into the body to produce or to increase immunity to the disease or condition associated with the substance.
Sometimes called vaccination.
Inoperable
not suitable for surgery.
Inorgasmic
see anorgasmic.
Insanity
any form or degree of mental disturbance of mind, permanent or temporary, that makes a person incapable to tell right from wrong.
Insemination
to introduce or inject semen into the reproductive tract of a female.
Insomnia
a prolonged and usually abnormal inability to obtain adequate sleep - staying asleep or poor sleep quality.
Insulin
hormone produced by the pancreas that helps the body turn the food into energy and helps store energy to be used later. People suffering of diabetes mellitus, a condition in which the pancreas does not produce enough insulin, need to inject themselves with insulin in order to help body cells to work properly.
Intercourse
physical intimate contact between individuals that involves the genitalia of at least one person. Anal intercourse involves the inserting of the penis into the anus, oral intercourse involves the inserting of the penis into the mouth, vaginal intercourse involves the inserting of the penis into the vagina.
Interferon
a group of proteins, which is produced by different cell types in response to an exposure of a virus, bacteria, or parasite, or other antigen that prevents or block replication of the virus, bacterium, parasite or other antigen in newly infected cells.
Internist
a physician specializing in internal medicine not requiring surgery.
Intersexual
a person with both male and female characteristics in varying degrees, including reproductive organs, secondary sexual characteristics, and sexual behavior.
Interstitial cystitis
a long-lasting condition also known as painful bladder syndrome or frequency-urgency- dysuria syndrome. The wall of the bladder becomes inflamed or irritated, which affects the amount of urine the bladder can hold and causes scarring, stiffening, and bleeding in the bladder.
Intimidation
the act of making someone fearful in order to force him or her do what another person wants him or her to do.
Intoxication
the state of being affected by a poisonous or toxic substance, drug or from excessive consumption of a substance.
Intracellular
within a cell.
Intramuscular
situated within the muscle. A method of giving medication or fluids directly into the muscle by injection.
Intrauterine
occurring or situated within the uterus.
Intrauterine device
a small device made of plastic or metal that is through the vagina into a woman's uterus, preventing the pregnancy by changing the environment of the uterus, anableing implantation of a fertilized ovum.
Intravenous
situated within the vein. A method of giving medication or fluids directly into the vein by injection.
Inverted nipple
a nipple that turn inwards.
Provided it has always been inverted it is not a problem. If a nipple suddenly becomes inverted, it is essential to seek medical advice as it could be a sign of breast cancer.
Irrigation
washing of a body cavity or wound with a stream of water or a medicated fluid.
Ischemia
decrease in the blood supply to a an organ, tissue, or other part caused by the narrowing or blockage of the blood vessels.
IUD
acronim for intrauterine device.
I.V.
acronim for intravenous.
I.M.
acronim for intramuscular.