Predominately motor loss

• Guillain-Barre syndrome
• porphyria
• lead poisoning
• hereditary sensorimotor neuropathies (HSMN) - Charcot-Marie-Tooth
• chronic inflammatory demyelinating polyneuropathy (CIDP)
• diphtheria

Predominately sensory loss

• diabetes
• uraemia
• leprosy
• alcoholism
• vitamin B12 deficiency
• amyloidosis

Alcoholic neuropathy

• secondary to both direct toxic effects and reduced absorption of B vitamins
• sensory symptoms typically present prior to motor symptoms