Congenital Methemoglobinemia, also known as hereditary methemoglobinemia, is related to methemoglobinemia, beta type and acquired methemoglobinemia. An important gene associated with Congenital Methemoglobinemia is CYB5R3 (Cytochrome B5 Reductase 3), and among its related pathways/superpathways is Methylene Blue Pathway, Pharmacodynamics. The drugs Methylene blue and Pharmaceutical Solutions have been mentioned in the context of this disorder. Affiliated tissues include skin and brain, and related phenotypes are cyanosis and methemoglobinemia