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Hypopituitarism
Hypopituitarism A generalized endocrine deficiency condition produced by failure, either partial or complete, of the pituitary gland to secrete its proper hormones. Failure after surgery for a pituitary tumor is usually complete. Idiopathic failure may be either complete or partial. In some instances, partial failure may involve chiefly the secretion of pituitary gonadotropins, the hormones that stimulate the ovaries or the testes to produce their own hormones. RELATED TERMS-------------------------------------- Endocrine Pertaining to hormones and the glands that make and secrete them into the bloodstream through which they travel to affect distant organs. The endocrine sites include the hypothalamus, pituitary gland, pineal gland, thyroid, parathyroids, heart (which makes atrial-natriuretic peptide), the stomach and intestines, islets of Langerhans in the pancreas, the adrenal glands, the kidney (which makes renin, erythropoietin, and calcitriol), fat cells (which make leptin). the testes, the ovarian follicle (estrogens) and the corpus luteum in the ovary). Endocrine is as opposed to exocrine. (The exocrine glands include the salivary glands, sweat glands and glands within the gastrointestinal tract.) Condition The term "condition" has a number of biomedical meanings including the following: 1.An unhealthy state, such as in "this is a progressive condition." 2.A state of fitness, such as "getting into condition." 3.Something that is essential to the occurrence of something else; essentially a "precondition." 4.As a verb: to cause a change in something so that a response that was previously associated with a certain stimulus becomes associated with another stimulus; to condition a person, as in behavioral conditioning. Pituitary The gland from which a number of hormones are released into the bloodstream. These hormones include growth hormone, ACTH, B-lipocortin (the precursor to B-endorphorin), FSH, LH, and TSH. Gland An organ that releases a chemical. Endocrine glands are ductless and secrete hormones directly into the bloodstream. Exocrine glands secrete externally, either through a tube or duct. Secrete To make and give off such as when the beta cells make insulin and then release it into the blood so that the other cells in the body can use it to turn glucose (sugar) into energy. Hormones Biological compounds that communicate information at a distance. Hormones require specific receptors to begin their biological action and use second messengers to initiate the cellular process that uses that information. Surgery Treating diseases or other medical conditions by operating on a patient to remove or repair parts of the body. Tumor Overgrowth of tissue. Idiopathic Of unexplained origin, as in the development of a symptom or syndrome that is apparently spontaneously generated. Ovaries The paired female sex glands in the pelvis, located one on each side of the uterus. The ovaries produce eggs and hormones including estrogen, progesterone, and androgens. Testes The pair of male glands, contained in the scrotum, that produce sperm. SIMILAR TERMS-------------------------------------- Hypodermic Beneath the skin. Hypoglicemia A condition in which the blood sugar is lower than normal. Hypoglycemia Low levels of blood sugar. Hypoglycemia Unawareness A situation in which the usual epinephrine-induced symptoms of a fall in blood sugar are, for a variety of reasons, either not felt or not recognized. |This situation may be dangerous, as the patient may go from functioning normally to unconscious within a short time. It is generally thought that if such a patient is allowed to maintain somewhat elevated blood sugar levels for several weeks, that the hypoglycemic unawareness may resolve. Hypoparathyroidism Parathyroid hormone insufficiency due to lack of secretion of the parathyroid gland. Hypophilia A condition or syndrome, variable in etiology and diagnosis, of being sexuoerotically substandard or deficient, particularly with respect to some aspect of genital functioning at the acceptive phase; impaired or deficient in sexual and genital responsiveness or frequency. The condition of being subnormal in sexual and genital responsiveness or frequency. Hypophilic Hypophilic refers to a person being sexuoerotically substandard or deficient. Hypophosphataemic rickets X-linked, vitamin D-resistant. May resemble ankylosing spondylitis. Hypophosphatasia Rare autosomal recessive cause of rickets. Associated with a lack of alkaline phosphatase. Hypophysis Pituitary gland. Hypoplasia Underdevelopment of a tissue or organ usually due to a decrease in the number of cells. Hyposensitisation See specific allergy vaccination. Hyposensitization To treat with frequent, small injections of an antigen to decrease the symptoms of an allergy to that antigen. Also called desensitization. Hypospadias A birth defect in the positioning of the urethral (urinary meatus) opening on the penis in males or into the vagina in females. In mild male hypospadias, the opening is only slightly displaced from the tip of the penis. In severe male hypospadias, the opening is in the female position, at the base of the scrotum, and the penis has an open gutter on its underside, instead of a covered urinary canal. A hypospadiac penis may be normal sized or small. 2. A birth defect in the male in which the urinary opening is on the underside of the shaft of the penis anywhere from the glans (first degree) to the perineum (third degree or penoscrotal hypospadias). A small penis with a severe degree of hypospadias is identical in appearance with an enlarged clitoris below which is a single opening or urogenital sinus leading to both the urethra and the vagina. Artificial hypospadias may occur as a sequel to an injury, as in a circumcision accident, or be self-inflicted. Hypotension Subnormal arterial blood pressure. Hypothalamus The portion of the brain's limbic system that integrates incoming information, and either increases or decreases the release of certain hormones that instruct the pituitary gland to release hormones. Hypothermia Low body temperature. Hypothyroidism Deficiency of thyroid hormone; the opposite of hyperthyroidism. The thyroid gland is in the throat, near the larynx or Adam's apple. Hypotonia Abnormally decreased tonicity, tension or strength; ocular hypotony refers to low intraocular pressure. Hypotonicity Diminished muscle tone; limp muscles. Hypovolemia A decreased amount of blood in the body. Hypoxemia Subnormal oxygenation of arterial blood, short of anoxia. Hypoxia Abnormal oxygen content in the organs and tissues of the body. Hypoxyphilia Asphyxiophilia [from Latin, hypoxia, oxygen deprivation + -philia]. PREVIOUS AND NEXT TERMS-------------------------------------- Hyperparathyroidism Excessive secretion of parathyroid hormone from the parathyroid glands, which are situated alongside the thyroid gland in the throat, and which play a role in regulating the amount of calcium in blood and body tissues. Hyperphilia A condition or syndrome, variable in etiology and diagnosis, of being sexuoerotically above standard or inordinate, particularly with respect to some aspect of genital functioning prior to and at the acceptive phase. The condition of being supranormal in sexual and genital responsiveness or frequency. Hyphephilia One of a group of paraphilias of the fetishistic/talismanic type in which the sexuoerotic stimulus is associated with the touching, rubbing, or the feel of skin, hair, leather, fur, and fabric, especially if worn in proximity to erotically significant parts of the body [from Greek, hyphe, web + -philia]. Hypertrophy Over-development in size of an organ or of its constituent cells. Hypophilia A condition or syndrome, variable in etiology and diagnosis, of being sexuoerotically substandard or deficient, particularly with respect to some aspect of genital functioning at the acceptive phase; impaired or deficient in sexual and genital responsiveness or frequency. The condition of being subnormal in sexual and genital responsiveness or frequency. Hypopituitarism Hypospadias A birth defect in the positioning of the urethral (urinary meatus) opening on the penis in males or into the vagina in females. In mild male hypospadias, the opening is only slightly displaced from the tip of the penis. In severe male hypospadias, the opening is in the female position, at the base of the scrotum, and the penis has an open gutter on its underside, instead of a covered urinary canal. A hypospadiac penis may be normal sized or small. 2. A birth defect in the male in which the urinary opening is on the underside of the shaft of the penis anywhere from the glans (first degree) to the perineum (third degree or penoscrotal hypospadias). A small penis with a severe degree of hypospadias is identical in appearance with an enlarged clitoris below which is a single opening or urogenital sinus leading to both the urethra and the vagina. Artificial hypospadias may occur as a sequel to an injury, as in a circumcision accident, or be self-inflicted. Hyperspadias A congenital malformation or misplacement of the urethra as in hypospadias except that the position of the opening is on the upper or superior/dorsal surface of the penis. Hypothyroidism Deficiency of thyroid hormone; the opposite of hyperthyroidism. The thyroid gland is in the throat, near the larynx or Adam's apple. Hypoxyphilia Asphyxiophilia [from Latin, hypoxia, oxygen deprivation + -philia]. Hysterectomy Surgical removal of the uterus or womb [from Greek, hystera, womb + ektome, excision]. We thank you for using the Medical Glossary to search for Hypopituitarism. If you have a better definition for Hypopituitarism than the one presented here, please let us know by making use of the suggest a term option. This definition of Hypopituitarism may be disputed by other professionals. Our attempt is to provide easy definitions on Hypopituitarism and any other medical topic for the public at large.
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