Hereditary Methaemoglobinaemia
Raised methaemoglobin levels from birth, caused by recessive changes in CYB5R3 or CYB5A or by dominant haemoglobin M variants in the globin genes; type II CYB5R3 deficiency also causes severe developmental problems.
Co se diagnózou změní
Knowing about it explains unexplained cyanosis and helps avoid medicines that raise methaemoglobin, such as dapsone, benzocaine and nitrites; methylene blue treats the enzyme forms but must not be given to people with G6PD deficiency.
Známé také jako
autosomal recessive methemoglobinemia; congenital methemoglobinemia
Zahrnuje 5 příbuzných podtypů ↓Skrýt podtypy ↑
- hemoglobin M disease
- methemoglobin reductase deficiency
- methemoglobinemia due to deficiency of methemoglobin reductase
- methemoglobinemia type 4
- methemoglobinemia, alpha type
