Which deficiency is rare but presents with anemia, leucopenia, neutropenia, and peripheral neuropathy?

Which deficiency is rare but presents with anemia, leucopenia, neutropenia, and peripheral neuropathy?

• A. Zinc
• B. Thiamin
• C. Iron
• D. Copper

Answer: (D)

Copper deficiency is rare but fits this pattern because copper is essential for both iron metabolism and nervous system integrity. Copper is a cofactor for enzymes like ceruloplasmin, which helps oxidize iron so it can be mobilized from stores and incorporated into hemoglobin. When copper is deficient, iron remains trapped in storage, leading to anemia, and the production of leukocytes and neutrophils can be impaired, causing leukopenia and neutropenia. Copper also supports myelin maintenance and nerve health, so deficiency can produce peripheral neuropathy, sometimes with sensory ataxia. In clinical context, copper deficiency may occur after bariatric surgery, malabsorption, or with excessive zinc intake, which increases intestinal copper sequestration and reduces absorption. The combination of anemia with leukopenia/neutropenia and neuropathy is characteristic of copper deficiency. Zinc deficiency can cause immune dysfunction and other signs but not the specific combination of cytopenias with neuropathy. Thiamin deficiency leads to neuropathy and other metabolic issues but not typically this hematologic pattern. Iron deficiency causes anemia but does not usually produce neuropathy or leukopenia.

Copper deficiency is rare but fits this pattern because copper is essential for both iron metabolism and nervous system integrity. Copper is a cofactor for enzymes like ceruloplasmin, which helps oxidize iron so it can be mobilized from stores and incorporated into hemoglobin. When copper is deficient, iron remains trapped in storage, leading to anemia, and the production of leukocytes and neutrophils can be impaired, causing leukopenia and neutropenia. Copper also supports myelin maintenance and nerve health, so deficiency can produce peripheral neuropathy, sometimes with sensory ataxia.

In clinical context, copper deficiency may occur after bariatric surgery, malabsorption, or with excessive zinc intake, which increases intestinal copper sequestration and reduces absorption. The combination of anemia with leukopenia/neutropenia and neuropathy is characteristic of copper deficiency.

Zinc deficiency can cause immune dysfunction and other signs but not the specific combination of cytopenias with neuropathy. Thiamin deficiency leads to neuropathy and other metabolic issues but not typically this hematologic pattern. Iron deficiency causes anemia but does not usually produce neuropathy or leukopenia.