Definition: Involves a specific impairment in arithmetical skills that is not solely explicable on the basis of general mental retardation or of inadequate schooling. The deficit concerns mastery of basic computational skills of addition, subtraction, multiplication, and division rather than of the more abstract mathematical skills involved in algebra, trigonometry, geometry, or calculus. | Developmental:acalculia | arithmetical disorder | Gerstmann's syndrome

Korsakoff's syndrome | Korsakoff syndrome | Korsakov's syndrome | Korsakow's syndrome | alcohol amnestic disorder | alcoholic dementia | amnesic syndrome | amnestic-confabulatory syndrome | amnestic psychosis | amnestic syndrome | cerebropathia psychica toxaemica | chronic alcoholic delirium | dysmnesic psychosis | dysmnesic syndrome | Korsakoff's disease | Korsakoff's psychosis | Korsakoff psychosis | Korsakov's psychosis | Korsakow's psychosis | Korsakosis | polyneuritic insanity | polyneuritic psychosis | polyneuritic syndrome | psychosis polyneuritica

Sturge-Weber syndrome | Dimitri-disease | Kalischer's syndrome | Krabbe's II syndrome | Parkes Weber's syndrome | Sturge's syndrome | Sturge's disease | Sturge-Kalischer-Weber syndrome | Sturge-Weber disease | Sturge-Weber-Dimitri syndrome | Weber-Dimitri syndrome | angioma capillare et venosum calcificans | angiomatosis meningo-oculofacialis | congenital neuroectodermal dysplasia | cutaneocerebral angioma | encephalotrigeminal angiomatosis | encephalotrigeminal syndrome | neurocutaneous syndrome

gargoylism | Hunter's syndrome | Hunter-Hurler syndrome | Hurler's disease | Hurler's polydystrophy | Hurler's syndrome | Johnie McL.'s syndrome | Pfaundler-Hurler syndrome | Sheldon-Ellis syndrome | Thompson's syndrome | dysostosis multiplex | dysostotic idiocy | lipochondrodystrophy | mucopolysaccharidosis

Korsakov's psychosis [ Korsakoff psychosis | Korsakoff syndrome | Korsakoff's disease | Korsakoff's syndrome | Korsakoff's amnesic syndrome | Korsakoff's amnestic syndrome ]

gustatory sweating [ auriculotemporal syndrome | Frey's syndrome | Frey syndrome | Von Frey syndrome | Von Frey's syndrome | Baillarger syndrome | gustatory hyperhidrosis | salivosudoriparous syndrome ]

Avellis's syndrome [ Avellis' syndrome | Avellis' paralysis syndrome | Avellis' hemiplegia | Avelli's paralysis | Avellis-Longhi syndrome | ambiguospinothalamic paralysis | ambiguospinothalamic syndrome | spinothalamic tract-nucleus ambiguous syndrome | superior laryngeal nerve syndrome ]

Gerstmann-Straussler-Scheinker syndrome | GSS [Abbr.]

Definition: This block contains a wide variety of disorders that differ in severity and clinical form but that are all attributable to the use of one or more psychoactive substances, which may or may not have been medically prescribed. The third character of the code identifies the substance involved, and the fourth character specifies the clinical state. The codes should be used, as required, for each substance specified, but it should be noted that not all fourth character codes are applicable to all substances. Identification of the psychoactive substance should be based on as many sources of information as possible. These include self-report data, analysis of blood and other body fluids, characteristic physical and psychological symptom ...[+++]s, clinical signs and behaviour, and other evidence such as a drug being in the patient's possession or reports from informed third parties. Many drug users take more than one type of psychoactive substance. The main diagnosis should be classified, whenever possible, according to the substance or class of substances that has caused or contributed most to the presenting clinical syndrome. Other diagnoses should be coded when other psychoactive substances have been taken in intoxicating amounts (common fourth character .0) or to the extent of causing harm (common fourth character .1), dependence (common fourth character .2) or other disorders (common fourth character .3-.9). Only in cases in which patterns of psychoactive substance-taking are chaotic and indiscriminate, or in which the contributions of different psychoactive substances are inextricably mixed, should the diagnosis of disorders resulting from multiple drug use (F19.-) be used. | Modifiers The following fourth-character subdivisions are for use with categories F10-F19: Code Title .0 Acute intoxication A condition that follows the administration of a psychoactive substance resulting in disturbances in level of consciousness, cognition, perception, affect or behaviour, o ...

Fertile eunuch syndrome Hypogonadotropic hypogonadism Idiopathic growth hormone deficiency Isolated deficiency of:gonadotropin | growth hormone | pituitary hormone | Kallmann's syndrome Lorain-Levi short stature Necrosis of pituitary gland (postpartum) Panhypopituitarism Pituitary:cachexia | insufficiency NOS | short stature | Sheehan's syndrome Simmonds' disease