What is Methemoglobinemia?

Methemoglobinemia (congenital or acquired) occurs when red blood cells (RBCs) contain methemoglobin at levels higher than 1%. Methemoglobin results from the presence of iron in the ferric form instead of the usual ferrous form.This results in a decreased availability of oxygen to the tissues. Symptoms are proportional to the methemoglobin level . As levels rise above 15%, neurologic and cardiac symptoms arise as a consequence of hypoxia.

Questions and answers on "Methemoglobinemia"

My daughter has an arm that is partially blue, could this be methemoglobinemia?

doctor1 MD


Thanks for posting your query.

A persistent bluish discoloration of the arm since birth is not likely to be due to methemoglobinaemia.


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I think my husband may have acquired methemoglobinemia. We have ruled out cardiac and his symptoms are dizziness, confusion, hypertension, metallic...

doctor1 MD

Well come to HCM
I really appreciate your concern, what ever the symptoms he has demands the further work up for correct diagnosis, and it is...

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I need to speak with a dentist. Severe pain. Filling placed in Rwanda has fallen out. Dentin exposed. Using benzocaine. Worried about...

doctor1 MD

Brief Answer:
Needs more details..

Detailed Answer:

I have gone through your query and can understand your...

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