<unk>  Nervous System<unk>  (AN or AAN) is a form of polyneuropathy that affects the non-voluntary, non-sensory nervous system (i.e., the<unk>  nervous system), affecting mostly the internal organs such as the bladder muscles, the cardiovascular system, the digestive tract, and the genital organs. These nerves are not under a person's conscious control and function automatically.<unk>  nerve fibers form large collections in the thorax, abdomen, and pelvis outside the spinal cord. They have connections with the spinal cord and ultimately the brain, however. Most commonly<unk>  is seen in persons with long-standing diabetes mellitus type 1 and 2. In most—but not all—cases,<unk>  occurs alongside other forms of<unk> , such as sensory<unk> .<unk>  is one cause of malfunction of the<unk>  nervous system (referred to as dysautonomia), but not the only one; some conditions affecting the brain or spinal cord also may cause<unk>  dysfunction, such as multiple system atrophy, and therefore, may cause similar symptoms to<unk> .
Autonomic neuropathy
Diabetic neuropathy
Small fiber peripheral neuropathy
Proximal diabetic neuropathy
Radiculopathy
Vasculitic neuropathy
Tropical neuropathy
Peripheral neuropathy