What exactly is alcoholic neuropathy?

Poisoned nerves. Long term use of excessive alcohol causes nerve damage. The symptoms can be burning pain, tingling sensation, numbness, or weakness. Other symptoms of alcohol polyneuropathy include problems with walking, blood pressure that drops too much when standing causing lightheadedness/fainting. Symptoms are worse when there is also vitamin deficiency such as thiamine deficiency, which can cause dementia.
Nerve damage. Alcoholic neuropathy is damage to the nerves that results from excessive drinking of alcohol.