Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0036341 (schizophrenia)
 60,220 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Vertigo and disorders of equilibrium are well known as aurae in epileptic diseases, especially in the psychomotor type of seizures. Some aurae of complex-partial seizures represent brief paroxysmal schizophrenic episodes with cenesthesias and perception disturbances. An analysis of a large sample of inpatients diagnosed as epileptics with vestibular aurae demonstrated the presence of the constellation of symptoms known as 'vertigo epileptica' comprising cognitive disturbances, cenesthesias and vegetative disorders, the so-called 'basic symptoms' of schizophrenics in Huber's sense, as well as their relationship to hallucinations and characteristic disorders of spatial orientation. The results highlight the pathogenetic relevance of the temporal lobe region and its associated limbic system for understanding schizophrenic disorders.
 ...
PMID:Psychopathology of vestibular aurae. 212 41

In a long-term psychiatric setting, self-induced water intoxication may be a life-threatening situation. At first glance, the symptoms or behaviors of self-induced water intoxication are similar to schizophrenia, i.e., inappropriate behavior, delusions, hallucinations, confusion, and disorientation. In some cases, the symptoms of water intoxication mimic schizophrenia and thus, are disguised as a part of the psychoses. Affected individuals develop polydipsia, which is accompanied by overhydration and dilutional hyponatremia. If untreated, the symptoms may progress from mild confusion to acute delirium, seizures, coma, or death (Ripley, Millson, & Koczapski, 1989). Under normal circumstances there is a delicate balance of water requirement and water intake. If the balance of water is altered, electrolyte imbalance can occur. The recognition of water intoxication or self-induced water intoxication and psychosis among chronic, institutionalized patients may prevent their death or the development of neurological damage (Arieff, 1985). Because self-induced water intoxication often goes unrecognized in its early stages and may have irreversible or fatal complications, early detection is crucial. This article will discuss the etiology, nursing assessment, and interventions associated with patients suffering from self-induced water intoxication.
 ...
PMID:The water-intoxicated patient. 226 Aug 89

Epilepsy was surveyed in the largest psychiatric hospital in the Santa Catarina State, southern Brazil. This establishment was designed for one thousand long-term beds but at the time of the survey there were 1126 inpatients. Diagnosis ranged from anxiety neurosis to schizophrenia although patients with epilepsy, with or without psychiatric symptoms were also admitted. The following aspects were analyzed: prevalence of epilepsy, seizure types, antiepileptic drug treatment and psychiatric diagnosis. 171 patients with epilepsy were identified (prevalence 152/1000), generalized tonic clonic attacks were the commonest seizure type and polytherapy was the standard treatment. In at least 85 of the epileptic patients there was no reason for prolonged institutionalization in a psychiatric environment. Moreover, most of the sample were prescribed large amounts of sedative drugs. A multidisciplinary approach and outpatients services are urgently required to improve the prognosis and well-being of patients with epilepsy who are referred to psychiatric care.
 ...
PMID:[Epilepsy at a psychiatric hospital]. 226 80

Two cases of electroconvulsive therapy (ECT) in adolescence are presented and the literature on the use of ECT in childhood and adolescence is reviewed. ECT was effective in children and adolescents with bipolar disorder and depression. Inadequate information exists to make a judgment regarding schizophrenia, delirium, and anorexia nervosa. ECT is not effective in autism and chronic organic brain syndromes. Complications cited include organicity and seizures in the period immediately after ECT, anxiety reactions, and disinhibition. Long-term memory deficit or cognitive impairment has not been found, although further research to rule out residual impairment is needed.
 ...
PMID:A review of ECT for children and adolescents. 222 48

Among patients with psychiatric disorders, especially schizophrenia, a pattern of extreme polydipsia and polyuria sometimes emerges, usually without readily identifiable medical causes. Hyponatremia may develop and progress to water intoxication, with symptoms including restlessness, confusion, seizures, or even death. We review the clinical features and pathophysiology of this syndrome and discuss nursing roles in identifying and managing patients with polydipsia and hyponatremia. While the causes of polydipsia and hyponatremia are unclear, relevant factors seem to include a possible dysfunction in central nervous system (CNS) thirst and osmoregulatory centers, the inappropriate secretion of or sensitivity to antidiuretic hormone (ADH), and psychoactive drugs. Management techniques for affected patients concentrate on careful observation, fluid restriction, and the minimization of possible exacerbating factors such as high neuroleptic dosage and cigarette consumption.
 ...
PMID:Polydipsia and hyponatremia in psychiatric patients: challenge to creative nursing care. 235 13

Six subjects who suffered from epileptic seizures followed by a schizophrenia-like state were examined. The mean duration between the onset of seizures and the psychotic state was 13.5 +/- 6.6 years (mean +/- S.D.). Five female subjects had episodic psychotic states and one man had a persistent one. Four subjects had localized temporal EEG abnormalities and the EEGs during psychotic states were different in each subject. During the psychotic state, no seizure was seen in the four subjects, a different seizure frequency in the episodic case and an unchanged frequency in the persistent case. The psychotic features were characterized by K. Schneider's first-rank symptoms. In order to understand the mechanisms of psychotic states, it will be useful to take into consideration the excitatory and inhibitory effects of neurotransmitters on limbic discharges.
 ...
PMID:Clinical studies of schizophrenia-like state in epileptic patients. 251 55

This paper is concerned with classification, clinical-electroencephalographic correlation, principles of treatment, and pharmaceutic therapy of epileptic psychoses. Based on the system of the physically founded reversible psychoses, classification of epileptic psychoses is developed, which is easy to apply for clinical and research purposes. Its principles are the criteria of disturbance of consciousness and of connexion to epileptic seizures. Epileptic psychoses without disturbance of consciousness frequently go along with a forced normalization of epileptic EEG-changes. This clinical-electroencephalographic correlation is documented by the cases of a depressive-paranoid and a cenesthetic alternative-psychosis. Epileptic psychoses connected to seizures, going along with disturbances of consciousness, however, show, without any exception, a pathological changed EEG. Also in the cases of the often iatrogenically produced epileptic psychoses with disturbances of consciousness yet not connected to seizures, the EEG-results are of decisive diagnostic importance. Each of these three clinical-electroencephalographically defined groups of psychoses calls for concentration on particular pathogenetical aspects concerning a specific pharmaceutic therapy. The respective principles of treatment are developed in subtly differentiated ways and they are provided with suggestion as to medicamental treatment. Schizophrenia-like epileptic psychoses are a model for idiopathic schizophrenias and so important perspective opens up for research.
 ...
PMID:[Epileptic psychoses and their drug treatment]. 256 83

The pharmacology, pharmacokinetics, clinical efficacy, adverse effects, dosage, and cost of the atypical antipsychotic drug clozapine are reviewed. Clozapine is a dibenzazepine compound chemically similar to loxapine but with a distinct pharmacologic profile. Unlike currently available medications, clozapine has a low potential for causing extrapyramidal symptoms and does not induce dopamine type 2 receptor hypersensitivity. It shows affinity in vitro not only for dopamine type 1 and 2 receptors but also for histamine type 1, alpha-adrenergic type 1 and 2, serotonin type 2, and muscarinic receptors. Clozapine given orally is nearly completely absorbed and readily metabolized. Urinary excretion is the major route of metabolite elimination. Clozapine has been used to treat schizophrenia, nonschizophrenic psychotic states, depression, neuroses, and behavioral disorders. Double-blind comparative studies have shown clozapine to be superior to haloperidol, chlorpromazine, and placebo in treating the symptoms of schizophrenia, as measured with validated psychiatric rating scales. Adverse effects include orthostatic hypotension, tachycardia, benign hyperthermia, hypertension, seizures, and sedation. Many of these effects are transient. Because of the risk of agranulocytosis, a comprehensive case-management system has been developed. In treating acute psychosis, the optimum dosage of clozapine is 300-450 mg/day given orally in divided doses. The high cost of clozapine may be offset by improved patient response and reduced hospital costs. Clozapine may be superior to other agents in the treatment of refractory schizophrenia and is associated with a negligible incidence of extrapyramidal symptoms.
 ...
PMID:Clozapine: an atypical antipsychotic agent. 257 73

Following a historical review and critical appraisal of the literature (problems of definition, selection, frequency, etiology, relation and classification) clinical findings from a series of retrospective and prospective studies (four samples with altogether 47 epileptic patients) are presented and discussed, as well as the results of EEG, CT and other relevant investigations. (1) 'Schizophrenia-like' interictal (periictal) psychoses in the epilepsies, which are not rare, appear to be true schizophreniform (= schizophrenic-accentuated) syndromes in a setting of 'clear' consciousness. There is no case of alternative psychosis and EEG 'forced normalization'. (2) Between schizophrenic-accentuated syndromes associated with regularly symptomatic epilepsies and genuine (endogeneous) schizophrenias, there are quantitative but no qualitative differences. Often there is a congruence and no possibility of differentiating in the transverse study. This is also true both for the affective and the cognitive disturbances ('structure of consciousness'); the latter are not suitable for separating the psychopathological syndromes of epilepsies. A discrimination between 'genuine' and 'symptomatic' schizophrenia is no longer meaningful. (3) A true (hereditary) coincidence of (genuine) epilepsy and schizophrenia occurs obviously very seldom. (4) Numerous findings are presented, concerning the conditions in which schizophrenic-accentuated syndromes appear. The following relevant factors are discussed: hereditary, latency, duration of illness, type and frequency of seizures, type and localization of EEG foci, type, extent and topography of brain lesions, quantity and quality of psychopathological findings as well as 'organic' psychosyndromes. The possible triggering of psychoses by psychosocial factors, low intelligence, chronic folate deficiency and other specific risk factors and the role of neurotransmitter disorders (GABA hypotheses) are discussed. Finally proposals are made concerning prevention and therapy. Especially often diagnosed non-alternative schizophrenic syndromes in epileptic patients must be controlled by blood levels of antiepileptics. There is a transitional rank, constituted by defined determinants between the poles epilepsy and schizophrenia or a converging course of those syndromes. The results should lead to more frequent EEG and CT eventual magnetic resonance imaging or positron emission tomography-investigations in schizophrenic patients.
 ...
PMID:Schizophrenic syndromes in epilepsies. 266 7

Positron emission tomography (PET) is emerging as a very useful clinical tool and is adding a great deal to our understanding of the pathophysiology of central nervous system (CNS) disorders. Although computed tomography (CT) and magnetic resonance imaging (MRI) have had a dramatic impact on patient management, there is often an important associated function abnormality which is best assessed by PET. In normal aging and in dementia, the CT and MRI brain changes of atrophy and white matter abnormalities are frequently nonspecific. PET has been more diagnostic, showing characteristic regional metabolic abnormalities. Evaluation of brain tumors such as astrocytomas with PET has demonstrated better correlation with histologic grade compared to CT. Unlike CT or MRI, PET can help to distinguish radiation necrosis from recurrent tumor, and can differentiate the extent of metabolically active tumor from surrounding edema. PET is useful in evaluating stroke patients, providing better prognostic information and demonstrating abnormalities sooner than CT. In epilepsy, PET appears to be superior to MRI in localizing seizure foci in patients with partial seizures. In head trauma patients, metabolic patterns are being described which will likely have an effect on patient management. The use of PET in schizophrenia has yielded very interesting results, with common patterns of metabolic abnormalities being demonstrated. CT and MRI in these patients have not been very useful. PET has also shown promise in movement disorders such as Huntington's disease. It is now clear that PET is already clinically useful and can provide valuable information unobtainable by CT and MRI. As new radioligands are developed, PET is certain to assume an even more important role in the future.
 ...
PMID:PET, CT, and MRI in the evaluation of neuropsychiatric disorders: current applications. 267 65


<< Previous 1 2 3 4 5 6 7 8 9 10 Next >>