Headache itself is a painful and often disabling feature of a relatively small number of primary headache disorders. It also occurs secondarily to a considerable number of other conditions. A wide range of headache types have been classified in detail by the International Headache Society The most common among them – tension-type headache (TTH), migraine, cluster headache and the so-called chronic daily headache syndromes – cause substantial levels of disability. Headache has been and contin
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Chagas disease is caused by Trypanosoma cruzi, a parasite related to the African trypanosome that causes sleeping sickness. It is spread by reduvid bugs and is one of the major health problems in South America, where 20 million people are infected. Due to immigration, about 500,000 people in the United States are believed to be infected.
Risk factors for Chagas disease include living in Central or South America, poverty, living in a hut where the reduvid bugs live in the walls, and receiving a
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