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Query: UMLS:C0018681 (headache)
 56,091 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Amongst the arthritis-causing arboviruses, i.e. those spread by insects, the alphavirus group is of special interest. These viruses occasionally cause vast outbreaks, such as O'nyong-nyong in Africa in 1959. In Fennoscandia, Sindbis-related Ockelbo, Pogosta, or Karelian fever viruses have been found to cause significant morbidity. The major symptoms in addition to joint inflammation are fever, fatigue, headache and rash. The joint symptoms may persist for weeks, even months. The diagnosis is based on the clinical picture and serology. The causative viruses are closely related but not identical. It appears that at least in Finland the Pogosta disease is more common than thought, and the symptoms may often be overlooked. Several factors related to the viruses, their hosts, and global environmental changes may affect the spread of these viruses. All over the world arbovirus-caused diseases have increased, because of global changes.
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PMID:Sindbis viruses and other alphaviruses as cause of human arthritic disease. 1555 47

Sindbis virus (SINV) is widespread in Europe, Africa, Australia, and Asia, but clinical infection occurs as epidemics in a few geographically restricted areas. We recently proved, by virus isolation from patients, that SINV is the causative agent of Pogosta disease, a mosquito-borne rash-arthritis occurring as larger epidemics every seventh year in Finland. Altogether, 86 patients with serologically verified SINV infection were recruited to the present study during the 2002 outbreak. We now describe in detail the duration, incidence, and characteristics of different symptoms; hematological parameters; antibody kinetics; and presence of SINV in different tissue samples. SINV RNA detection or virus isolation from blood and/or skin lesions was successful in 8 patients. Immunoglobulin (Ig) M antibodies became detectable within the first 8 days of illness, and IgG antibodies became detectable within the first 11 days of illness. During the acute phase of Pogosta disease, the typical symptoms were arthritis, itching rash, fatigue, mild fever, headache, and muscle pain. The most notable finding was that, in 50% of the patients, joint symptoms lasted for >12 months.
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PMID:Clinical and laboratory manifestations of Sindbis virus infection: prospective study, Finland, 2002-2003. 1587 Nov 14