Folic acid deficiency, megaloblastic anemia and peripheral polyneuropathy due to oral contraceptives. 1989

A Kornberg, and R Segal, and J Theitler, and R Yona, and S Kaufman
Department of Hematology, Assaf Harofeh Medical Center, Zerifin, Israel.

A 34-year-old woman developed megaloblastic anemia and peripheral polyneuropathy following the use of oral contraceptives for 4 years. Low levels of folic acid and vitamin B12 were found. Both the complete recovery after therapy with the vitamins, and the absence of other causes of vitamin B12 and folate deficiency, suggest that the vitamin deficiencies were caused by the oral contraceptives and resulted in the rare combination of megaloblastic anemia and polyneuropathy. The poor response to vitamin B12 alone, and the development of anemia and polyneuropathy 4 months after cessation of vitamin B12 therapy suggest that folate deficiency was the primary problem.

UI MeSH Term Description Entries
D010523 Peripheral Nervous System Diseases Diseases of the peripheral nerves external to the brain and spinal cord, which includes diseases of the nerve roots, ganglia, plexi, autonomic nerves, sensory nerves, and motor nerves. Peripheral Nerve Diseases,Peripheral Neuropathies,PNS (Peripheral Nervous System) Diseases,PNS Diseases,Peripheral Nervous System Disease,Peripheral Nervous System Disorders,Nerve Disease, Peripheral,Nerve Diseases, Peripheral,Neuropathy, Peripheral,PNS Disease,Peripheral Nerve Disease,Peripheral Neuropathy
D003277 Contraceptives, Oral, Combined Fixed drug combinations administered orally for contraceptive purposes. Combined Oral Contraceptive,Contraceptive Agents, Female, Combined,Oral Contraceptives, Combined,Combined Oral Contraceptives,Contraceptive, Combined Oral,Contraceptives, Combined Oral,Oral Contraceptive, Combined
D005260 Female Females
D005494 Folic Acid Deficiency A nutritional condition produced by a deficiency of FOLIC ACID in the diet. Many plant and animal tissues contain folic acid, abundant in green leafy vegetables, yeast, liver, and mushrooms but destroyed by long-term cooking. Alcohol interferes with its intermediate metabolism and absorption. Folic acid deficiency may develop in long-term anticonvulsant therapy or with use of oral contraceptives. This deficiency causes anemia, macrocytic anemia, and megaloblastic anemia. It is indistinguishable from vitamin B 12 deficiency in peripheral blood and bone marrow findings, but the neurologic lesions seen in B 12 deficiency do not occur. (Merck Manual, 16th ed) Deficiency, Folic Acid,Acid Deficiencies, Folic,Acid Deficiency, Folic,Deficiencies, Folic Acid,Folic Acid Deficiencies
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D000748 Anemia, Macrocytic Anemia characterized by larger than normal erythrocytes, increased mean corpuscular volume (MCV) and increased mean corpuscular hemoglobin (MCH). Anemias, Macrocytic,Macrocytic Anemia,Macrocytic Anemias
D000749 Anemia, Megaloblastic A disorder characterized by the presence of ANEMIA, abnormally large red blood cells (megalocytes or macrocytes), and MEGALOBLASTS. Anemias, Megaloblastic,Megaloblastic Anemia,Megaloblastic Anemias
D014806 Vitamin B 12 Deficiency A nutritional condition produced by a deficiency of VITAMIN B 12 in the diet, characterized by megaloblastic anemia. Since vitamin B 12 is not present in plants, humans have obtained their supply from animal products, from multivitamin supplements in the form of pills, and as additives to food preparations. A wide variety of neuropsychiatric abnormalities is also seen in vitamin B 12 deficiency and appears to be due to an undefined defect involving myelin synthesis. (From Cecil Textbook of Medicine, 19th ed, p848) Deficiency, Vitamin B 12,Deficiency, Vitamin B12,Vitamin B12 Deficiency,Deficiencies, Vitamin B12,Vitamin B12 Deficiencies

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