| dysteleology | <biology> The doctrine of purposelessness; a term applied by Haeckel to that branch of physiology which treats of rudimentary organs, in view of their being useless to the life of the organism. "To the doctrine of dysteleology, or the denial of final causes, a proof of the real existence of such a thing as instinct must necessarily be fatal." (Word (Dynamic Sociology)) Origin: Pref. Dys- + teleology. Source: Websters Dictionary (01 Mar 1998) |
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| dystelephalangy | Bowing of the distal phalanx of the little finger. Origin: dys-+ G. Telos, end, + phalanx (05 Mar 2000) |
| dysthymia | A type of depression involving long- term, chronic symptoms that do not disable you, but keep you from functioning at full steam or from feeling good. Dysthymia is a less severe type of depression than what is considered a major depression. However, people with dysthymia may also sometimes experience major depressive episodes. (12 Dec 1998) |
| dysthymic | Relating to dysthymia. (05 Mar 2000) |
| dysthymic disorder | Chronically depressed mood that occurs for most of the day more days than not for at least 2 years. The required minimum duration in children to make this diagnosis is 1 year. During periods of depressed mood, at least 2 of the following additional symptoms are present: poor appetite or overeating, insomnia or hypersomnia, low energy or fatigue, low self esteem, poor concentration or difficulty making decisions, and feelings of hopelessness. (dsm-IV) (12 Dec 1998) |
| dysthyroidal infantilism | Stunted body growth and mental development appearing in the first years of life resulting the inappropriate development of the thymus gland or inadequate maternal intake of iodine during gestation. (27 Sep 1997) |
| dystocia | <medicine> Difficult delivery pr parturition. Origin: NL, fr. Gr.; ill, hard + delivery. Source: Websters Dictionary (01 Mar 1998) |
| dystocia, cervical | Dystocia caused by mechanical obstruction at the cervix. (12 Dec 1998) |
| dystocia, foetal | Dystocia caused by the foetus due to its size (too big), shape or position in the uterus. (12 Dec 1998) |
| dystocia, placental | Trouble delivering the placenta (the afterbirth). (12 Dec 1998) |
| dystome | <chemical> Cleaving with difficulty. Datolite was called dystome spar by Mohs. Origin: Gr. Ill, hard + cutting, to cut. Source: Websters Dictionary (01 Mar 1998) |
| dystonia | <clinical sign, neurology> Disordered tonicity of muscle. Origin: Gr. Tonos (18 Nov 1997) |
| dystonia lenticularis | Dystonia resulting from a lesion of the lenticulate nucleus. (05 Mar 2000) |
| dystonia musculorum deformans | A genetic, environmental, or idiopathic disorder, usually beginning in childhood or adolescence, marked by muscular contractions that distort the spine, limbs, hips, and sometimes the cranial-innervated muscles. The abnormal movements are increased by excitement and, at least initially, abolished by sleep. The musculature is hypertonic when in action, hypotonic when at rest. Hereditary forms usually begin with involuntary posturing of the foot or hand (autosomal recessive form ) or of the neck or trunk (autosomal dominant form ); both forms may progress to produce contortions of the entire body. Synonym: progressive torsion spasm, torsion disease of childhood, torsion dystonia, Ziehen-Oppenheim disease. (05 Mar 2000) |
| dystonia, cranial | A term used to describe dystonia that affects the muscles of the head, face, and neck. Oromandibular dystonia affects the muscles of the jaw, lips, and tongue. The jaw may be pulled either open or shut, and speech and swallowing can be difficult. Spasmodic dysphonia involves the muscles of the throat that control speech. Also called spastic dysphonia or laryngeal dystonia, it causes strained and difficult speaking or breathy and effortful speech. Meige's syndrome is the combination of blepharospasm and oromandibular dystonia and sometimes spasmodic dysphonia. Spasmodic torticollis can be classified as a type of cranial dystonia. (12 Dec 1998) |
| dysvitaminosis |
(dys
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| dystrophin |
(dys
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| dystrophoneurosis |
(dys
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| dystrophy |
any disorder in which cells become damaged or do not develop properly because they do not receive adequate nutrition
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| dysentery |
a severe intestinal infection, causing abdominal pain and diarrhea with blood or mucus
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