Category: H
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Healing touch
A form of biofield medicine, often compared to therapeutic touch, in which hands-on contact with the patient is combined with other spiritual links made between patient and practitioner.
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Hypersensitive tooth
A tooth sensitive to temperature changes, sweets, or percussion. It may exhibit gingival recession, exposed root dentin, caries, or periodontal disease.
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Helical computed tomography
Computed tomographic (CT) images that are obtained as the CT table moves continuously during a single, held breath. Detailed evaluation of dynamic internal features is feasible with this technique.
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Homologous tissue
Tissues that are identical in structure.
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Hard tissue
In dentistry, the term used to denote any of the three calcified tissue components of the tooth: enamel, dentin, and cementum.
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Habit tic
Habitual repetition of a grimace or muscular action. Psychogenic tic refers to a type of tic characterized by repetitive and involuntary muscle movements that stem from a psychological origin, rather than being caused by damage to or disease of the nervous system.
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Hyaline thrombus
A thrombus having a glassy appearance, usually occurring in smaller blood vessels.
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Hepatic vein thrombosis
An often fatal thrombotic occlusion of the hepatic veins, marked clinically by hepatomegaly, weight gain, ascites, and abdominal pain.
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Heparin-induced thrombocytopenia
A decrease in the platelet count caused by an immune reaction to heparin. It may lead to widespread or potentially life-threatening blood clotting rather than bleeding.
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Hydatid thrill
A peculiar tremor felt on palpation of a hydatid cyst.