| haemorrhagic endovasculitis | Endothelial and medial hyperplasia of placental blood vessels with thrombosis, fragmentation, and diapedesis of red blood cells resulting in stillbirth or foetal developmental disorders. (05 Mar 2000) |
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| haemorrhagic enteritis | A disease of turkeys caused by an adenovirus and characterised by splenomegaly and intestinal haemorrhage. (05 Mar 2000) |
| haemorrhagic exudative erythema | <dermatology> This relatively rare disorder is characterised by skin purpura, joint pains, abdominal pain and renal disease (glomerulonephritis). Although Henoch-Schonlein purpura or anaphylactoid purpura, is thought to be a immune complex mediated disease, its exact cause is unknown. Its typical benign coarse can, however, include renal failure. (27 Sep 1997) |
| haemorrhagic fever | A syndrome that occurs in perhaps 20-40% of infections by a number of different viruses of the families Arenaviridae (Lassa fever, Bolivian haemorrhagic fever, Argentinean haemorrhagic fever), Bunyaviridae (Crimean-Congo haemorrhagic fever), Flaviviridae (Dengue haemorrhagic fever, Omsk haemorrhagic fever), Filoviridae (Ebola fever, Marburg virus disease), etc. Some types of haemorrhagic fever are tick-borne, others mosquito-borne, and some seem to be zoonoses; clinical manifestations are high fever, scattered petechiae, gastrointestinal tract and other organ bleeding, hypotension, and shock; kidney damage may be severe, especially in Korean haemorrhagic fever and neurologic signs may appear, especially in the Argentinean-Bolivian types. Five types of haemorrhagic fever are transmissible person-to-person: Bolivian haemorrhagic fever, Lassa fever, Ebola fever, Marburg virus disease, and Crimean-Congo haemorrhagic fever. See: epidemic haemorrhagic fever. Synonym: Ebola haemorrhagic fever. (05 Mar 2000) |
| haemorrhagic fever virus | <virology> Any of many viruses in the families Flaviviridae, Filoviridae and Bunyaviridae that are often spread by rodents and biting insects, these viruses cause diseasescharacterised by fever and bleeding (such as Ebola). (09 Oct 1997) |
| haemorrhagic fever virus, crimean-congo | The type species of nairovirus of the family bunyaviridae isolated from febrile patients in africa. It is primarily transmitted by ticks and causes a severe, often fatal disease in humans. (12 Dec 1998) |
| haemorrhagic fever with renal syndrome | <syndrome> An acute febrile disease occurring predominately in asia. It is characterised by fever, prostration, vomiting, haemorrhagic phenonema, shock, and renal failure. It is caused by any one of several closely related species of the genus hantavirus. The most severe form is caused by hantaan virus whose natural host is the rodent apodemus agrarius. A milder form is caused by seoul virus and related species and transmitted by the rodents rattus rattus and r. Norvegicus. (12 Dec 1998) |
| haemorrhagic fever, american | Diseases caused by american haemorrhagic fever viruses (tacaribe complex viruses). (12 Dec 1998) |
| haemorrhagic fever, crimean | A severe, often fatal disease in humans caused by the crimean-congo haemorrhagic fever virus (haemorrhagic fever virus, crimean-congo). (12 Dec 1998) |
| haemorrhagic fever, ebola | A highly fatal, acute haemorrhagic fever, clinically very similar to marburg virus disease, caused by the ebola virus, first occurring in the sudan and adjacent northwestern (what was then) zaire. The natural reservoir and mode of transmission of the virus are unknown, but secondary infection is by direct contact with infected blood and other body secretions. (12 Dec 1998) |
| haemorrhagic fever, omsk | Infection with the omsk haemorrhagic fever virus, a flavivirus. (12 Dec 1998) |
| haemorrhagic fevers, viral | A group of viral diseases of diverse aetiology but having many similar clinical characteristics; increased capillary permeability, leukopenia, and thrombocytopenia are common to all. Haemorrhagic fevers are characterised by sudden onset, fever, headache, generalised myalgia, backache, conjunctivitis, and severe prostration, followed by various haemorrhagic symptoms. Haemorrhagic fever with kidney involvement is haemorrhagic fever with renal syndrome. (12 Dec 1998) |
| haemorrhagic gangrene | Gangrene occurring rarely in advanced meningococcal septicaemia. (05 Mar 2000) |
| haemorrhagic glaucoma | Secondary glaucoma after formation of new blood vessels in the iris. (05 Mar 2000) |
| haemorrhagic infarct | An infarct red in colour from infiltration of blood from collateral vessels into the necrotic area. Synonym: haemorrhagic gangrene, red infarct. (05 Mar 2000) |
| viral haemorrhagic fever | An epidemic viral illness seen in southern Sudan and Zaire, caused by the Ebola virus. The illness is characterised by fever, malaise, muscle aches, respiratory symptoms, diarrhoea, vomiting, epistaxis, haemoptysis, haematemesis, rash, tremors and subconjunctival haemorrhages. Transmitted by close bodily contact with infected individuals (blood, faeces and body fluids). Incubation is-21 days with initial symptoms of fever and headache. There is no specific treatment and death can occur within 10 days. (27 Sep 1997) |
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| viral haemorrhagic fever virus | <virology> An epidemic viral illness seen in southern Sudan and Zaire, caused by the Ebola virus. The illness is characterised by fever, malaise, muscle aches, respiratory symptoms, diarrhoea, vomiting, epistaxis, haemoptysis, haematemesis, rash, tremors and subconjunctival haemorrhages. Transmitted by close bodily contact with infected individuals (blood, faeces and body fluids). Incubation is-21 days with initial symptoms of fever and headache. There is no specific treatment and death can occur within 10 days. (27 Sep 1997) |
| chronic haemorrhagic villous synovitis | <radiology> Monoarthritis, young adults, erosions on BOTH sides of joint (!), probably inflammatory, haemosiderin deposited in synovium, articular cartilage preserved (despite extensive marginal erosions; similar to gout), NO calcification Differential diagnosis: TB (associated atrophy of muscle and bone), rheumatoid arthritis (symmetrical), synovial sarcoma (with or without calcified; outside joint), synovial osteochondromatosis (12 Dec 1998) |
| Philippine haemorrhagic fever | Severe arbovirus infection with haemorrhagic manifestations, considerable mortality, probably due to mosquito borne dengue virus; seen in tropical and subtropical urban areas of southeast Asia, South Pacific, Australia, Central and South America, and the Caribbean islands. (05 Mar 2000) |
| multiple idiopathic haemorrhagic sarcoma | <oncology, tumour> A type of vascular cancer characterised by soft purple nodules that usually develop first on the feet and then slowly spread across the skin.This cancer is most often found in people with compromised immune systems, such as AIDS patients. (09 Oct 1997) |
| conjunctivitis, acute haemorrhagic | A highly contagious disease characterised by subconjunctival haemorrhage, sudden swelling of the eyelids and congestion, redness, and pain in the eye. Epidemic conjunctivitis caused by enterovirus 70 (ev-70) was first described in africa in 1969. It is caused also by coxsackie virus a24 variant (ca24v). Epidemics by this organism have appeared most frequently in asia. (12 Dec 1998) |
| Crimean-Congo haemorrhagic fever | A form of haemorrhagic fever distinct from Omsk haemorrhagic fever, occurring in central Russia, transmitted by species of the tick Hyalomma, and caused by Crimean-Congo haemorrhagic fever virus, a member of the Bunyaviridae family; horses are the chief reservoir of human infection; characterised by abrupt onset, high fever, headache, myalgia, widespread petechial haemorrhagic lesions, gastrointestinal bleeding, high fatality rate. Synonym: African tick fever. (05 Mar 2000) |
| Crimean-Congo haemorrhagic fever virus | A virus of the genus Nairovirus (family Bunyaviridae) from Africa and the southern USSR, carried by ticks (Hyalomma and Amblyomma) and found in human blood; the cause of Crimean-Congo haemorrhagic fever. (05 Mar 2000) |
| hereditary haemorrhagic telangiectasia | <gastroenterology> An inherited disease characterised by thin blood vessel walls in the nose, skin and gastrointestinal tract. This condition ins associated with a high risk of bleeding complications. Inheritance: autosomal dominant. (27 Sep 1997) |
| hereditary haemorrhagic thrombasthenia | <haematology> A form of congenital platelet functional defect that result in prolongation of the bleeding time. Characteristics include mucosal and post-operative bleeding that may be severe. (17 Dec 1997) |
| simian haemorrhagic fever | A highly fatal disease of macaque monkeys caused by the simian haemorrhagic fever virus and characterised by fever, facial oedema, anorexia, adipsia, skin petechiae, diarrhoea, haemorrhages, and death. (05 Mar 2000) |
| simian haemorrhagic fever virus | An arterivirus causing simian haemorrhagic fever in macaque monkeys. (05 Mar 2000) |
| superior haemorrhagic polioencephalitis | <syndrome> A condition frequently encountered in chronic alcoholics, largely due to thiamin deficiency and characterised by disturbances in ocular motility, pupillary alterations, nystagmus, and ataxia with tremors; an organic-toxic psychosis is often an associated finding, and Korsakoff's syndrome often coexists; characteristic cellular pathology found in several areas of the brain. Synonym: superior haemorrhagic polioencephalitis, Wernicke's disease, Wernicke's encephalopathy. (05 Mar 2000) |
| dengue haemorrhagic fever | <microbiology> A tropical disease caused by dengue virus (Arbovirus), that is transmitted by the bite of an infected mosquito of the genus Aedes). Four severity grades of the illness are seen: grade I (fever and constitutional symptoms), grade II (grade I plus spontaneous bleeding of skin, gums or gastrointestinal tract), grade III (grade II plus agitation and circulatory failure) and grade IV (profound shock). Grade I infection is seen most frequently in world travelers, where it is usually self-limited and rarely fatal. The other grades are referred to as dengue haemorrhagic fever and are often fatal. Dengue haemorrhagic fever appears to be an infection by one of the other dengue viruses. Prior immunity to a different dengue virus type appears to be important in the development of the more serious haemorrhagic form. Vaccines are available. Protection from mosquitoes is an important preventive measure. (27 Sep 1997) |
| infantile acute haemorrhagic oedema of the skin | A generally benign form of cutaneous vasculitis, characterised by ecchymotic purpura, often in a cockade pattern, and inflammatory oedema in infants. (05 Mar 2000) |