Thiamine deficiency neuropathy. It's still common today.

Despite the fact that thiamine deficiency neuropathy is increasing in incidence in our society, it remains an underdiagnosed disorder. The typical complaints of weakness and burning feet are often regarded as trivial by the attending physician. Electrophysiologic studies are sensitive and often provide supportive evidence to aid in the diagnosis. Since chronic pain therapy is often ineffective, a high index of suspicion should be maintained to help ensure early diagnosis and successful intervention.