In most—but not all—cases, autonomic neuropathy occurs alongside other forms of neuropathy, such as sensory neuropathy.Autonomic neuropathy is one cause of malfunction of the autonomic nervous system, but not the only one; some conditions affecting the brain or spinal cord also may cause autonomic dysfunction, such as multiple system atrophy, and therefore, may cause similar symptoms to autonomic neuropathy.The signs and symptoms of autonomic neuropathy include the following:

Urinary bladder conditions: bladder incontinence or urine retention
Gastrointestinal tract: dysphagia, abdominal pain, nausea, vomiting, malabsorption, fecal incontinence, gastroparesis, diarrhoea, constipation
Cardiovascular system: disturbances of heart rate (tachycardia, bradycardia), orthostatic hypotension, inadequate increase of heart rate on exertion
Respiratory system: impairments in the signals associated with regulation of breathing and gas exchange (central sleep apnea, hypopnea, bradypnea). Skin : thermal regulation, dryness through sweat disturbances
Other areas: hypoglycemia unawareness, genital impotence

Neuritis
Neuritis is a general term for inflammation of a nerve or the general inflammation of the peripheral nervous system. Symptoms depend on the nerves involved, but may include pain, paresthesia (pins-and-needles), paresis (weakness), hypoesthesia (numbness), anesthesia, paralysis, wasting, and disappearance of the reflexes. Causes of neuritis include:

Signs and symptoms
Those with diseases or dysfunctions of their nerves may present with problems in any of the normal nerve functions. Symptoms vary depending on the types of nerve fiber involved. In terms of sensory function, symptoms commonly include loss of function ("negative") symptoms, including numbness, tremor, impairment of balance, and gait abnormality. Gain of function (positive) symptoms include tingling, pain, itching, crawling, and pins-and-needles.
Reduced density of the small nerves in the epidermis supports a diagnosis of small-fiber peripheral neuropathy. In EMG testing, demyelinating neuropathy characteristically shows a reduction in conduction velocity and prolongation of distal and F-wave latencies, whereas axonal neuropathy shows a reduction in amplitude.Laboratory tests include blood tests for vitamin B-12 levels, a complete blood count, measurement of thyroid stimulating hormone levels, a comprehensive metabolic panel screening for diabetes and pre-diabetes, and a serum immunofixation test, which tests for antibodies in the blood. Treatment
The treatment of peripheral neuropathy varies based on the cause of the condition, and treating the underlying condition can aid in the management of neuropathy. When peripheral neuropathy results from diabetes mellitus or prediabetes, blood sugar management is key to treatment. In prediabetes in particular, strict blood sugar control can significantly alter the course of neuropathy. In peripheral neuropathy that stems from immune-mediated diseases, the underlying condition is treated with intravenous immunoglobulin or steroids. When peripheral neuropathy results from vitamin deficiencies or other disorders, those are treated as well. Medications
A range of medications that act on the central nervous system have been used to symptomatically treat neuropathic pain. Commonly used medications include tricyclic antidepressants (such as nortriptyline, amitriptyline. imapramine, and desipramine,) serotonin-norepinephrine reuptake inhibitor (SNRI) medications (duloxetine, venlafaxine, and milnacipran) and antiepileptic medications (gabapentin, pregabalin, oxcarbazepine zonisamide levetiracetam, lamotrigine, topiramate, clonazepam, phenytoin, lacosamide, sodium valproate and carbamazepine). Opioid and opiate medications (such as buprenorphine, morphine, methadone, fentanyl, hydromorphone, tramadol and oxycodone) are also often used to treat neuropathic pain.