Copper Deficiency: An Overlooked Diagnosis.

Copper deficiency may often be overlooked due to physicians' poor awareness of the disease. Delayed diagnosis and therapy may lead to poor prognosis of neurological function. Here, we present a 68-year-old male with an approximately one-year history of unsteady feet who had visited several clinical departments and was finally diagnosed with copper deficiency. In the present case, it took approximately one year to diagnose the condition, and the therapy of copper supplementation led to only slight improvement in subjective symptoms. Physicians should be more aware of this condition for a good prognosis of the disease.