Your nervous system is made up of two parts. The core is your 
				central nervous system — your brain and spinal cord. The rest of 
				your nervous system, branching off from your spinal cord to the 
				rest of your body, is your peripheral nervous system.
				Part of the peripheral nervous system involves nerves that 
				you consciously control — such as nerves you use to move your 
				voluntary muscles. Part is your autonomous nervous system — the 
				nerves that regulate the part of your nervous system that you 
				can't control, such as your heart rate, blood pressure and 
				digestion.
				Damage to your peripheral nerves is called peripheral 
				neuropathy. Autonomic neuropathy is a type of peripheral 
				neuropathy in which the very small nerves are damaged.
				A number of conditions can lead to damage of the autonomic 
				nerves. The most common cause is diabetes. About half of the 
				people who have diabetes eventually develop some type of 
				neuropathy.
				Other causes may include:
					- Alcoholism, a chronic, 
					progressive disease that can lead to nerve damage
- Poor diet White rice, white flour, 
					white sugar no fatty acids in diet.
- Infection from virus, mycoplasma 
					type bacteria.
- Abnormal protein buildup in organs (amyloidosis), 
					which affects the organs and the nervous system
- 
					Autoimmune diseases, 
					in which your immune system attacks and damages parts of 
					your body, including your nerves
- Some tumors, which can press on 
					nerves and cause direct or remote damage (paraneoplastic 
					syndrome)
- Multiple system atrophy, a 
					degenerative disorder that destroys the nervous system
- Surgical or traumatic injury 
					to nerves, injury can be from a car accident.
- Other chronic illnesses such as 
					Parkinson's disease and HIV/AIDS
- 
					Celiac 
					disease more info