<unk>  (also called<unk>  dysautonomia) refers to a category of dysautonomias — conditions in which the autonomic nervous system does not function properly. In<unk>  dysautonomias, the autonomic dysfunction occurs as a<unk>  condition (as opposed to resulting from another disease). Autonomic failure is categorized as<unk> " when believed to result from a chronic condition characterized by degeneration of the autonomic nervous system, or where autonomic failure is the predominant symptom and its cause is unknown. Such<unk> " dysautonomias are distinguished from secondary dysautonomias, where the dysfunction of the autonomic nervous system is believed to be caused by another disease (e.g. diabetes). Diseases categorized as<unk>  usually include pure autonomic failure and multiple system atrophy. Many scientists also categorize Parkinson disease and familial dysautonomia as<unk> ".
Primary autonomic failure
Pure autonomic failure
Autoimmune autonomic ganglionopathy
Paroxysmal sympathetic hyperactivity
Familial dysautonomia
Diabetic neuropathy
Thalamocortical dysrhythmia
Electromagnetic hypersensitivity