| epidemic vertigo | A paroxysmal attack of severe vertigo, not accompanied by deafness or tinnitus, which affects young to middle-aged adults, often following a non-specific upper respiratory infection; due to unilateral vestibular dysfunction. Synonym: endemic paralytic vertigo, epidemic vertigo, Gerlier's disease, kubisagari, kubisagaru, paralyzing vertigo. (05 Mar 2000) |
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| epidemic vomiting | 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) |
| typhus, epidemic | A severe acute disease with prolonged high fever up to 40 |
| typhus, epidemic louse-borne | The classic form of typhus, caused by rickettsia prowazekii, which is transmitted from man to man by the louse pediculus humanus corporis. This disease is characterised by the sudden onset of intense headache, malaise, and generalised myalgia followed by the formation of a macular skin eruption and vascular and neurologic disturbances. (12 Dec 1998) |