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Dysfunction
Dysfunction Difficult function or abnormal function.
RELATED TERMS--------------------------------------
Abnormal
Not normal. Deviating from the usual structure, position, condition, or behavior. In referring to a growth, abnormal may mean that it is cancerous or premalignant (likely to become cancer).
SIMILAR TERMS--------------------------------------
Dysfunction, erectile
A consistent inability to sustain an erection sufficient for sexual intercourse. Also commonly known as "impotence." Medically, the term "erectile dysfunction" is used to differentiate impotence from other problems that interfere with sexual intercourse (such as lack of sexual desire and problems with ejaculation and orgasm). Impotence usually has a physical cause, such as disease, injury, drug side-effects, or a disorder that impairs blood flow in the penis. Impotence is treatable in all age groups.
Dysfunctional
Working improperly or abnormally.
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Dynacin
Brand name for minocycline.
Dynein
A family of microtubule motor proteins that derive energy from ATP (adenosine triphosphatase) activity. The dyneins also form arms on the outer tubules of cilia and flagella.
DYS
Symbol for familial dysautonomia or a prefix denoting an inability or lack of function, as in dyspraxia (lack of ability to adequately control muscle movements).
Dyscrasia
Any disease condition, especially in hematology, as in "blood dyscrasias."
Dysentery, amebic
Dysentery (inflammation of the intestine) with ulcers in the colon due to infection with an ameba (Entamoeba histolytica). This single-celled parasite is transmitted to humans via contaminated water and food.
Dysfunction
Dysfunction, erectile
A consistent inability to sustain an erection sufficient for sexual intercourse. Also commonly known as "impotence." Medically, the term "erectile dysfunction" is used to differentiate impotence from other problems that interfere with sexual intercourse (such as lack of sexual desire and problems with ejaculation and orgasm). Impotence usually has a physical cause, such as disease, injury, drug side-effects, or a disorder that impairs blood flow in the penis. Impotence is treatable in all age groups.
Dyshidrotic eczema
Irritation of the skin on the palms of hands and soles of the feet characterized by clear, deep blisters that itch and burn.
Dyskeratosis congenita
An inherited cause of bone-marrow failure, dyskeratosis congenita is a syndrome characterized by abnormal excess skin pigmentation, abnormal or absent nails, and mucosal leukoplakia (white premalignant areas on the lips and conjunctiva of the eyes and in the mouth, anus, and urethra).More than 80% of patients with dyskeratosis congenita develop bone-marrow failure with decreasing production of all types of blood cells (pancytopenia). Premature death is caused by the bone-marrow failure (in 20% of cases), malignant transformation of the leukoplakia (30%), or overwhelming infections (50%) associated with immune deficiency. Most cases of the disease are X-linked. They are due to mutations (changes) in a gene on the X chromosome called DKC1 which encodes a protein called dyskerin. A seemingly-normal mother carrying the DKC1 mutation has a 50:50 chance of transmitting it to a son who then will suffer from the disease. The average age at death is 24 years.
Dyslipidemia
A disorder of lipoprotein metabolism, including lipoprotein overproduction or deficiency. Dyslipidemias may be manifested by elevation of the total cholesterol, the "bad" low-density lipoprotein (LDL) cholesterol and the triglyceride concentrations, and a decrease in the "good" high-density lipoprotein (HDL) cholesterol concentration in the blood.
Dysmetabolic syndrome X
A constellation of metabolic abnormalities in serum or plasma insulin/glucose level ratios, lipids (triglycerides, LDL cholesterol subtypes and/or HDL cholesterol), uric acid levels, coagulation factor imbalances and vascular physiology. (This is the official definition by the American Association of Clinical Endocrinologists of this condition which is also known as the metabolic syndrome and syndrome X.)
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