Abstract Through the analysis of an extensive biographical source material – the life description of Swedish clergyman Pehr Stenberg – this article examines how love was framed as a cause of illness in everyday contexts in late eighteenth-century Sweden. Love was perceived as an emotion that could cause both physical and mental forms of illness. Although lovesickness has been regarded as an illness that could be used by afflicted individuals to communicate emotions, this source material indicates that illnesses caused by love were regarded as actual afflictions. In the framing of these illnesses, conceptions of female fragility were reinforced as love was perceived to have a particularly destabilising power on women.