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Comorbidity
Comorbidity The simultaneous appearance of two or more illnesses, such as the co-occurrence of schizophrenia and substance abuse or of alcohol dependence and depression. The association may reflect a causal relationship between one disorder and another or an underlying vulnerability to both disorders. Also, the appearance of the illnesses may be unrelated to any common etiology or vulnerability. RELATED TERMS-------------------------------------- Schizophrenia Any of a group of psychotic disorders usually characterized by withdrawal from reality, illogical patterns of thinking, delusions, and hallucinations, and accompanied in varying degrees by other emotional, behavioral, or intellectual disturbances. Schizophrenia is associated with dopamine imbalances in the brain and defects of the frontal lobe and is caused by genetic, other biological, and psychosocial factors. It is mainly treated by antipsychotic drugs which block Dopamine receptors such as Haloperidol. Alcohol An organic chemical in which one or more hydroxyl (OH) groups are attached to carbon (C) atoms in place of hydrogen (H) atoms. Common alcohols include ethyl alcohol or ethanol (found in alcoholic beverages), methyl alcohol or methanol (can cause blindness) and propyl alcohol or propanol (used as a solvent and antiseptic). Rubbing alcohol is a mixture of acetone, methyl isobutyl ketone, and ethyl alcohol. In everyday talk, alcohol usually refers to ethanol as, for example, in wine, beer, and liquor. It can cause changes in behavior and be addictive. Dependence A state of absolute need, both physical and psychological. Depression A mental state of depressed mood characterized by feelings of sadness, despair and discouragement. Depression ranges from normal feelings of the blues through dysthymia to major depression. It in many ways resembles the grief and mourning that follow bereavement, there are often feelings of low self esteem, guilt and self reproach, withdrawal from interpersonal contact and physical symptoms such as eating and sleep disturbances. Association 1. In dysmorphology (the study of birth defects), the nonrandom occurrence in two or more individuals of a pattern of multiple anomalies (birth defects) not known to be a malformation syndrome (such as Down syndrome), a malformation sequence (of events) or what is called a polytopic field defect (in which all of the defects are concentrated in one particular area of the body). An example of an association in dysmorphology is the VACTERL association of birth defects. 2. In genetics, the occurrence together of two or more characteristics more often than would be expected by chance alone. An example of association involves a feature on the surface of white blood cells called HLA (HLA stands for human leukocyte antigen). A particular HLA type, HLA type B-27, is associated with an increased risk for a number of diseases including ankylosing spondylitis. The extent of the association is enormous. Ankylosing spondylitis is 87 times more likely to occur in people with HLA B-27 than in the general population. Etiology The theory of the factors in the genesis, origin, or cause of a disorder or disease. SIMILAR TERMS-------------------------------------- PREVIOUS AND NEXT TERMS-------------------------------------- Catharsis The healthful (therapeutic) release of ideas through "talking out" conscious material accompanied by an appropriate emotional reaction. Also, the release into awareness of repressed ("forgotten") material from the unconscious. See also repression. Cathexis Attachment, conscious or unconscious, of emotional feeling and significance to an idea, an object, or, most commonly, a person. Cerea flexibilitas The "waxy flexibility" often present in catatonic schizophrenia in which the patient's arm or leg remains in the position in which it is placed. Circumstantiality Pattern of speech that is indirect and delayed in reaching its goal because of excessive or irrelevant detail or parenthetical remarks. The speaker does not lose the point, as is characteristic of loosening of associations, and clauses remain logically connected, but to the listener it seems that the end will never be reached. Clanging type of thinking in which the sound of a word, rather than its meaning, gives the direction to subsequent associations. Comorbidity Compensation A defense mechanism, operating unconsciously, by which one attempts to make up for real or fancied deficiencies. Also a conscious process in which one strives to make up for real or imagined defects of physique, performance skills, or psychological attributes. The two types frequently merge. See also overcompensation. Compulsion Repetitive ritualistic behavior such as hand washing or ordering or a mental act such as praying or repeating words silently that aims to prevent or reduce distress or prevent some dreaded event or situation. The person feels driven to perform such actions in response to an obsession or according to rules that must be applied rigidly, even though the behaviors are recognized to be excessive or unreasonable. Conative Pertains to one's basic strivings as expressed in behavior and actions. Concrete thinking Thinking characterized by immediate experience, rather than abstractions. It may occur as a primary, developmental defect, or it may develop secondary to organic brain disease or schizophrenia. Condensation A psychological process, often present in dreams, in which two or more concepts are fused so that a single symbol represents the multiple components. We thank you for using the Medical Glossary to search for Comorbidity. If you have a better definition for Comorbidity than the one presented here, please let us know by making use of the suggest a term option. This definition of Comorbidity may be disputed by other professionals. Our attempt is to provide easy definitions on Comorbidity and any other medical topic for the public at large.
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