Dysautonomia is an umbrella term used to describe various conditions that cause a disruption of the autonomic nervous system. The autonomic nervous system then does not function properly. There are various causes of dysautonomia, including post-infectious syndromes (such as post-COVID and QFS), ME/CFS, but also, for example, Parkinson's disease. Dysautonomia occurs primarily in women. View our page on the different forms of dysautonomia here for more information.