Dysautonomia is when the autonomic nervous system, which controls important bodily functions such as blood pressure, heart rate, digestion and temperature, does not function normally. This nervous system is divided into two branches: the sympathetic and the parasympathetic. Dysautonomia primarily affects the sympathetic branch. It can be a very limiting condition and some people can become bedridden because they cannot get up without experiencing severe symptoms. Dysautonomia can be caused by head injuries such as concussions, diseases, infections, surgery, genetic factors or have an unknown cause. If you experience a combination of symptoms related to problems with the autonomic nervous system and do not know what is causing it, it may be worth considering dysautonomia as a possible explanation.
There are several types of dysautonomia, and POTS is one of them.