Darwin's illness.
Darwin's chronic ill health began after 1838. By his own account he had been exposed to Triatoma infestans, a vector of Chagas' disease, and his symptoms were compatible with Chagas' disease. The case for rejecting a diagnosis of Chagas' disease is reviewed; however, the weight of evidence favors this diagnosis, as originally suggested by Saul Adler.
Adler
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D001695:Biology / Q000266:history*; D014355:Chagas Disease / Q000175:diagnosis / Q000266:history*; D004739:England; D005197:Famous Persons; D049672:History, 19th Century; D006801:Humans; D008297:Male