Editing Charles X Gustav (section)

==Illness and death==

Soon after the estates opened on 4 January 1660, Charles X Gustav fell ill with symptoms of a cold. Ignoring his illness, he repeatedly went to inspect the Swedish forces near Gothenburg, and soon broke down with chills, headaches and [[dyspnoea]]. On 15 January, court physician [[Johann Köster]] arrived, and in [[medical error]] mistook Charles X Gustav's [[pneumonia]] for [[scorbut]] and [[dyspepsia]]. Köster started a "cure" including the application of multiple [[enemata]], [[laxatives]],<ref name=AsmusTenhaef59>{{harvnb |Asmus |Tenhaef |2006 |p=59}}</ref> [[bloodletting]] and [[sneezing powder]]. While after three weeks the fever eventually was down and the coughing was better, the pneumonia had persisted and evolved into a [[sepsis]] by 8 February.<ref name=AsmusTenhaef60>{{harvnb |Asmus |Tenhaef |2006 |p=60}}</ref>

On 12 February, Charles X Gustav signed his [[Will (law)|testament]]: His son, [[Charles XI of Sweden]], was still a minor, and Charles X Gustav appointed a minor regency consisting of six relatives and close friends. Charles X Gustav died the next day at the age of 37.<ref name=AsmusTenhaef60/>

On the night between 12 and 13 February, he would die in the arms of Lord High Marshal Gabriel Oxenstierna after having urged him to bring peace to Sweden.<ref>Isacsson, Claes-Göran (2015). Karl X Gustavs krig: Fälttågen i Polen, Tyskland, Baltikum, Danmark och Sverige 1655-1660 [Wars of Charles X Gustav: The campaigns in Poland, Germany, the Baltics, Denmark and Sweden 1655-1660] (in Swedish). Historiska Media. p. 264. {{ISBN|978-91-7545-011-7}}</ref>