congenital methemoglobinemia
- congenital methemoglobinemia
- hereditary methemoglobinemia any of several rare types caused by inherited conditions. Deficiency of cytochrome-b5 reductase is an autosomal recessive condition that may be either confined to the erythrocytes and relatively symptom-free or generalized to the leukocytes and sometimes the brain, muscle, and fibroblasts, in which case the individual may be mentally retarded. Abnormalities of hemoglobin M are autosomal dominant conditions that cause cyanosis in infancy but usually few other symptoms.
Medical dictionary.
2011.
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