| epidemic haemorrhagic fever | A condition characterised by acute onset of headache, chills and high fever, sweating, thirst, photophobia, coryza, cough, myalgia, arthralgia, and abdominal pain with nausea and vomiting; this phase lasts from three to six days and is followed by capillary and renal interstitial haemorrhages, oedema, oliguria, azotemia, and shock; most varieties are caused by arboviruses (togaviruses, arenaviruses, flaviviruses, and bunyaviruses), and are rodent-borne. Synonym: haemorrhagic fever with renal syndrome, Songo fever. (05 Mar 2000) |
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| epidemic hepatitis | A virus disease with a short incubation period (usually 15 to 50 days), caused by hepatitis A virus, a member of the family Picornaviridae, often transmitted by faecal-oral route; may be inapparent, mild, severe, or occasionally fatal and occurs sporadically or in epidemics, commonly in school-age children and young adults; necrosis of periportal liver cells with lymphocytic and plasma cell infiltration is characteristic and jaundice is a common symptom. Synonym: epidemic hepatitis, hepatitis A, infectious hepatitis, MS-1 hepatitis, short incubation hepatitis, virus A hepatitis. (05 Mar 2000) |
| epidemic hiccup | A persistent hiccup occurring as a complication of influenza. (05 Mar 2000) |
| epidemic hysteria | Spontaneous, en masse development of identical physical and/or emotional symptoms among a group of individuals, as seen in a classroom of schoolchildren, a socially contagious frenzy of irrational behaviour in a group of people as a reaction to an event. Synonym: epidemic hysteria. (05 Mar 2000) |
| epidemic keratoconjunctivitis | Follicular conjunctivitis followed by subepithelial corneal infiltrates; often caused by adenovirus type 8, less commonly by other types. Synonym: virus keratoconjunctivitis. (05 Mar 2000) |
| epidemic keratoconjunctivitis virus | An adenovirus (type 8) causing epidemic keratoconjunctivitis, especially among shipyard workers, and also associated with outbreaks of swimming pool conjunctivitis. (05 Mar 2000) |
| epidemic myalgia | An acute infectious disease usually occurring in epidemic form, characterised by paroxysms of pain, usually in the chest, and associated with strains of Enterovirus coxsackievirus type B. Synonym: benign dry pleurisy, Bornholm disease, Daae's disease, devil's grip, diaphragmatic pleurisy, epidemic benign dry pleurisy, epidemic diaphragmatic pleurisy, epidemic myalgia, epidemic myositis, myositis epidemica acuta, epidemic transient diaphragmatic spasm, Sylvest's disease. (05 Mar 2000) |
| epidemic myalgia virus | A virus of Enterovirus coxsackievirus type B, in the family Picornaviridae, that causes epidemic pleurodynia. Synonym: Bornholm disease virus, epidemic myalgia virus. (05 Mar 2000) |
| epidemic myalgic encephalomyelitis | An epidemic disease characterised by stiffness of the neck and back, headache, diarrhoea, fever, and localised muscular weakness; restricted almost exclusively to adults, affecting women more than men; probably viral in origin. Synonym: Akureyri disease, benign myalgic encephalomyelitis, epidemic myalgic encephalomyelitis, Iceland disease. (05 Mar 2000) |
| epidemic myalgic encephalomyelopathy | A disease superficially resembling poliomyelitis, characterised by diffuse involvement of the nervous system associated with myalgia. (05 Mar 2000) |
| epidemic myositis | An acute infectious disease usually occurring in epidemic form, characterised by paroxysms of pain, usually in the chest, and associated with strains of Enterovirus coxsackievirus type B. Synonym: benign dry pleurisy, Bornholm disease, Daae's disease, devil's grip, diaphragmatic pleurisy, epidemic benign dry pleurisy, epidemic diaphragmatic pleurisy, epidemic myalgia, epidemic myositis, myositis epidemica acuta, epidemic transient diaphragmatic spasm, Sylvest's disease. (05 Mar 2000) |
| epidemic nausea | Virus caused by Norwalk virus, a 27 nm RNA virus in the family Caliciviridae frequently occurring in a group of people (e.g., in a school or small community) suddenly and without prodromal illness or malaise, is intense while it lasts, but ceases abruptly after a few hours or a day or so; symptoms are headache, abdominal pain, giddiness, and diarrhoea in most of the cases, and extreme prostration in about 75%. Synonym: epidemic nausea. (05 Mar 2000) |
| epidemic neuromyasthenia | An epidemic disease characterised by stiffness of the neck and back, headache, diarrhoea, fever, and localised muscular weakness; restricted almost exclusively to adults, affecting women more than men; probably viral in origin. Synonym: Akureyri disease, benign myalgic encephalomyelitis, epidemic myalgic encephalomyelitis, Iceland disease. (05 Mar 2000) |
| epidemic nonbacterial gastroenteritis | An epidemic, highly communicable but rather mild disease of sudden onset, caused by the epidemic gastroenteritis virus (especially Norwalk agent), with an incubation period of 16 to 48 hours and a duration of 1 to 2 days, which affects all age groups; infection is associated with some fever, abdominal cramps, nausea, vomiting, diarrhoea, and headache, one or another of which may be predominant. Synonym: acute infectious nonbacterial gastroenteritis. (05 Mar 2000) |
| epidemic parotiditis | An acute infectious and contagious disease caused by a Paramyxovirus and characterised by fever, inflammation and swelling of the parotid gland, sometimes of other salivary glands, and occasionally by inflammation of the testis, ovary, pancreas, or meninges. Synonym: mumps. (05 Mar 2000) |