Peripheral Nerves and Autonomic Function

Peripheral nerves carry information between the brain, spinal cord and body. Substance-related changes can affect sensation, movement and automatic functions, with different causes and different prospects for recovery.

Burning feet, reduced feeling or unexplained weakness can make ordinary activities harder. Peripheral nerves carry sensory information and signals to muscles; some also help regulate functions such as blood pressure and digestion. Damage to these nerves is called peripheral neuropathy. Autonomic dysfunction concerns automatic regulation and is not always caused by peripheral nerve damage.

Sustained heavy alcohol use is associated with neuropathy, but diabetes, nutritional deficiencies, injuries, medicines and other conditions can also contribute. A history of substance use should inform assessment, rather than become the explanation for every symptom.

Sudden weakness on one side, facial drooping or new speech difficulty needs emergency medical help. Sudden confusion needs immediate medical help. New or worsening numbness, weakness or walking difficulty after nitrous oxide use needs prompt medical assessment. These changes should not be dismissed as intoxication, anxiety or routine recovery. Someone who may be physically dependent on alcohol should seek medical advice before abruptly stopping or sharply reducing drinking.

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