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Meningococcal meningitis has been occurring worldwide in both endemic and epidemic forms. Serogroup A accounts for majority of cases of epidemic as well as endemic Meningococcal meningitis in developing nations, whereas group C and group B causes epidemic and endemic meningococcal meningitis in developed countries. Person to person spread of N. meningitides generally occurs through inhalation of droplets of infected nasopharyngeal secretions by direct or indirect oral contact. Incubation period varies from 2 to 10 days. N. meningitides typically causes acute infective illness characterized by sequential development of upper respiratory tract infection, meningococcemia, meningitis and focal neurological deficit. Over 90 per cent cases of adult meningococcal infections have cerebrospinal meningitis, whereas in children prevalence of meningitis is much lower (50 per cent). Acute meningitis manifests with fever, severe headache, vomiting and neck stiffness. Presentations may be non-specific in infants, elderly and in patients with fulminant meningococcemia. Diagnosis is confirmed with cerebrospinal fluid analysis. Overall mortality due to meningitis is usually around 10 per cent. In meningococcal septicemia, the case fatality rate may exceed 50 per cent. Preventive strategies include vaccination, chemoprophylaxis and early detection and treatment. Mass vaccination campaign, if appropriately carried out, has been documented to halt an epidemic of meningococcal disease due to serogroup A or C. In the present review we have discussed the available evidence with regards to prevention at primary, secondary and tertiary level. Public health approach to an outbreak of meningococcal meningitis in a community or an organization is also outlined.
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PMID:Meningococcal meningitis outbreak control strategies. 1166 37

During the summer of 2000, 35 patients with West Nile Virus Fever were admitted to our hospital. Of these, the 26 (21 adults, mean age 56 (19-86) and 5 children (aged 9-15)) presented have neurological involvement, 33% with meningitis, 52% with meningoencephalitis, 10% with encephalitis and 5% with acute polyneuropathy. Presenting clinical features were fever in 95% of cases, headache in 90%, nausea/vomiting in 52%, confusion in 48%, somnolence in 38%, neck stiffness in 33%, a skin rash in 19%, diarrhea in 14%, cervical pain in 14%, seizure in 9%, photophobia in 9% and limb weakness in 4%. Leucopenia was not found. Two patients diagnosed with meningoencephalitis died. Three patients had signs of an acute polyneuropathy, this being the only complaint of one patient. The EEG was abnormal in all cases of meningitis or meningoencephalitis, except in three cases. Outbreaks of West Nile Virus Fever are emerging as a worldwide disease with high rates of neurological involvement and death. It should be considered in cases presenting with aseptic meningoencephalitis, meningitis and acute polyneuropathy, especially during the summer months and in areas along bird migration pathways.
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PMID:Neurological features of West Nile virus infection during the 2000 outbreak in a regional hospital in Israel. 1212 78

Reovirus Type 2 was isolated from three patients aged 5, 9 and 10 years. The etiological role of Reovirus in one case was confirmed by demonstration of antibodies in convalescent serum and none in acute serum. Symptoms in this case were suggestive of infectious mononucleosis. In the second case, rhinitis and non-purulent otitis were preceded by two waves of fever, abdominal pain and emesis. Acute serum was not available but convalescent serum had a high titre to a Reovirus, thus supporting a Reovirus etiology. Symptoms in the third case were fever, intermittent headache, neck stiffness, abdominal cramps and weakness of a leg. Because of the unavailability of convalescent serum, evidence of a Reovirus etiology was incomplete. No attempt is made to associate Reovirus with a particular clinical picture. Rather, attention is simply drawn to the existence of Reovirus infections in Ontario.
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PMID:Occurrence of reovirus infection in Ontario. 1400 9

A thirty-eight year-old lady with a history of bilateral adrenalectomy for Cushing's disease seven years previously, presented with sudden onset of severe headache, nausea, vomiting and loss of consciousness. She was somnolent and confused. She had neck stiffness, sixth nerve palsy and mydriasis on the left side. Computerized tomography (CT) and magnetic resonance imaging (MRI) studies revealed a non-homogeneous, grade IV D pituitary mass lesion associated with hemorrhage in the chiasmatic, interhemispheric, cerebellopontine, perimesencephalic cisterns and a hematoma within the frontal lobe. Angiography showed only bilateral elevation of horizontal segments of the anterior cerebral arteries. According to this angiographic evidence, it was presumed that the subarachnoid hemorrhage and the intracerebral hematoma were linked to pituitary adenoma apoplexy. ACTH level was 450 pg/ml. The hemorrhagic lesion with suprasellar extension was totally removed by left pterional craniotomy. Histological examination revealed a necrotic, ACTH-secreting pituitary adenoma. Even though apoplexy is a well known complication of pituitary adenomas, to our knowledge subarachnoid hemorrhage and intracerebral hematoma as a result of pituitary apoplexy in the context of Nelson's syndrome has not previously been reported.
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PMID:An unusual presentation of Nelson's syndrome with apoplexy and subarachnoid hemorrhage. 1455 76

A 14 year old male developed a subdural empyema with a leptomeningeal infection of sinogenic origin. Initially, there were none of the expected neurological symptoms such as worsening headaches, vomiting, alteration in the level of consciousness and neck stiffness. Later, focal neurological deficits and seizures occurred. An endonasal sinus drainage was performed simultaneously with a neurosurgical exploration. We started an antibiotic therapy. All neurological deficits disappeared rapidly.
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PMID:[An endocranial complication of sinogenic origin without initial classical neurological symptoms]. 1530 55

Primary intraventricular hemorrhage is very rare in adults and is even more infrequent in children. We present a 15-year-old girl who presented to the hospital because of sudden severe headache, vomiting and fever. Neurological examination only showed neck stiffness. A brain computed tomography showed blood in the ventricular system. Conventional angiography revealed an arteriovenous malformation originating in the right pericallosal artery branches. Gamma-knife radiosurgery was performed without relevant complications. A follow-up cerebral angiography showed disappearance of the arteriovenous malformation. When a primary intraventricular hemorrhage is detected in a young patient it is mandatory to rule out an underlying lesion such an arteriovenous malformation. Treatment options include surgery, interventional radiology and radiosurgery, alone or in combination.
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PMID:[Primary intraventricular hemorrhage as a result of a bleeding arteriovenous malformation]. 1592 25

The typical postdural puncture headache manifests as postural frontal, frontotemporal, or occipital headache, which is worsened by ambulation, and improved by decubitus. Accompanying symptoms are nausea, vomiting, and neck stiffness. Various rare presentations after dural puncture, such as upper back pain, arm pain, thoracic pain, bowel and bladder dysfunction have been sparsely reported. We report two cases who sustained arm and upper back pain after spinal anesthesia, and epidural blood patch gave them a complete relief of the symptoms.
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PMID:Post-dural puncture arm and upper back pain--a report of two cases. 1606 Apr 10

Acute viral infections of the central nervous system (CNS) such as acute flaccid paralysis, meningitis, and encephalitis, are responsible for a high morbidity, particularly in children. Non-Polio enteroviruses (NPEV) are known to be responsible for over 80% of viral meningitis in which the etiologic agent is identified. In the present study, we show the frequency of enterovirus meningitis in Brazil from December 1998 to December 2003. Enterovirus were isolated from 162 (15.8%), of a total of 1,022 cerebrospinal fluid (CSF) specimens analyzed. Echovirus 30 was identified in 139 of these isolates (139/162-85.2%). Other identified enteroviruses were: Coxsackievirus B5 (3.7%), Echovirus 13 (3.7%), Echovirus 18 (3%), Echovirus 6 (1.2%), Echovirus 25 (1.2%), Echovirus 1 (0.6%), and Echovirus 4 (0.6%). Patients's age ranged from 28 days to 68 years old. The most frequent symptoms were fever (77%), headache (69.5%), vomiting (71.3%), neck stiffness (41.3%), convulsion (7.1%), and diarrhea (3.7%). Although, the majority of the patients recovered without any complication or permanent squeal, five deaths occurred. Throughout the surveillance period, five viral meningitis outbreaks were confirmed: four in the Southern Brazil and one in the Northeast Brazil. Echovirus 30 was responsible for four out of the five outbreaks while Echovirus 13 caused the fifth one. Besides the outbreaks, 734 sporadic cases were also identified during the study period and 59 of these were positive for virus isolation (8%). Echovirus 30 accounted for 70% of the isolates. Our results showed that Echovirus 30 was the most prevalent etiological agent of viral meningitis in Brazil, causing both outbreaks and sporadic cases.
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PMID:Enterovirus meningitis in Brazil, 1998-2003. 1629 28

This study investigated the clinical manifestations and outcomes of central nervous system (CNS) infection by enteroviruses. Cases with CNS involvement among all enterovirus-culture-positive cases from January 1995 to June 2003 were retrospectively reviewed. Among 1028 enterovirus-culture-positive cases, there were 333 cases involving the CNS. Of these, the ratio of male to female subjects was 1.78, and the mean (+/- standard deviation) age was 6.83 +/- 5.9 years; 21 were premature neonates, and 10 failed to thrive. Disease entities included 282 cases of aseptic meningitis (84.7%), 44 cases of encephalitis (13.2%), and 7 cases of encephalomyelitis/polio-like syndrome (2.1%). Of these cases, 97.9% (326/333) had fever with peak body temperature at 38.9 degrees C, 85% had headache and vomiting, 70% had meningeal signs, 64% had neck stiffness, 16.6% (55/333) had change of consciousness, 5.4% (18/333) had seizures and 5.2% (17/333) had myoclonic jerks. Mannitol was administered in 77.2% of patients (257/333), along with intravenous immunoglobulin in 6.6% (22/333). Twelve cases received ventilator support. One patient died of hand-foot-and-mouth disease, encephalitis plus cardiopulmonary failure, and 2 premature neonates died of hepatic failure, disseminated intravascular coagulation, sepsis-like syndrome and myocarditis. Eighteen had neurologic sequelae, including 7 with limb weakness, 5 with epilepsy, 2 with sixth cranial nerve palsy, 3 with cerebral palsy, 4 with psychomotor retardation, 2 with spasticity, and 1 with hearing loss. Factors associated with unfavorable outcomes (death or sequelae) included younger age (p=0.0003), higher peak white blood cell count (WBC) [p=0.0009] and skin rash (p=0.005). Younger age and higher peak WBC were poor prognostic factors of severe enterovirus CNS infection. Death was related to neonatal enterovirus infection and enterovirus 71 infection in young children.
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PMID:Clinical features and factors of unfavorable outcomes for non-polio enterovirus infection of the central nervous system in northern Taiwan, 1994-2003. 1634 42

Post-dural puncture headache (PDPH) also known as spinal (or post-spinal) headache still remains a disabling complication of needle insertion into the subarachnoid space. Pregnant women are at particular risk of dural puncture, and the subsequent headache, because of sex, young age, and the widespread application of regional anesthesia. Accidental dural puncture complicating epidural anesthesia varies in incidence from 0.19 to 4.4%. The incidence of epidural needle-induced PDPH headache in pregnant women has been reported to range 76-85%. The classic symptoms of PDPH consist of photophobia, nausea, vomiting, neck stiffness, tinnitus, diplopia, and dizziness in addition to the often, severe cephalgia. This article reviews the current literature on the pathophysiology, incidence, prevention, and treatment of PDPH in pregnant women.
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PMID:The management of accidental dural puncture in pregnant women: what does an obstetrician need to know? 1653 22


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