Journal
JOURNAL OF THE AMERICAN ACADEMY OF DERMATOLOGY
Volume 54, Issue 5, Pages 824-844Publisher
MOSBY-ELSEVIER
DOI: 10.1016/j.jaad.2005.11.1104
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iron deficiency is the world's most common nutritional deficiency and is associated with developmental delay, impaired behavior, diminished intellectual performance, and decreased resistance to infection. In premenopausal women, the most common causes Of iron deficiency anemia are menstrual blood loss and pregnancy. In men and postmenopausal women, the most common causes Of iron deficiency anemia are gastrointestinal blood loss and malabsorption. Hemoglobin concentration can be Used to screen for iron deficiency, whereas serum ferritin concentration can be used to confirm iron deficiency. However, the serum ferritin concentration may be elevated in patients with infectious, inflammatory, and neoplastic conditions. other tests may be needed, such as erythrocyte zinc protoporphyrin concentration, transferrin concentration, serum iron concentration, and transferrin saturation. The cause of iron deficiency must be identified. if the patient is male, postmenopausal female, or has risk factors for blood loss, then the patient should be evaluated For sources of blood loss, especially gastrointestinal (eg, colon cancer). Several studies have examined the relationship between iron deficiency and hair loss. Almost all have addressed women exclusively and have focused on noncicatricial hair loss. Some suggest that iron deficiency may he related to alopecia areata, androgenetic alopecia, telogen effluvium, and diffuse hair loss, while Others do not. Currently, there is insufficient evidence to recommend universal screening for iron deficiency in patients with hair loss. In addition, there is insufficient evidence to recommend giving iron supplementation therapy to patients with hair loss and iron deficiency in the absence of iron deficiency anemia. The decision to do either should be based on clinical judgment. It is our practice at the Cleveland Clinic Foundation to screen male and female patients with both cicatricial and noncicatricial hair loss for iron deficiency. Although this practice is not evidence based per se, we believe that treatment for hair loss is enhanced when iron deficiency, with or without anemia, is treated. iron deficiency anemia should be treated. Treating iron deficiency without anemia is controversial. Treatment of nutritional iron deficiency anemia includes adequate dietary intake and oral iron supplementation. Excessive iron supplementation can cause iron Overload and should be avoided, especially in high-risk patients such as those with hereditary hemochromatosis. Patients who do not respond to iron replacement therapy should Undergo additional testing to identify Other Underlying causes of iron deficiency anemia.
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