Symptoms include a blueish or greenish coloration of the blood (cyanosis), skin, and mucous membranes, even though a blood count test may not show any abnormalities in the blood. This discoloration is caused by greater than 5 grams per cent of deoxyhemoglobin, or 1.5 grams per cent of methemoglobin, or 0.5 grams per cent of sulfhemoglobin, all serious medical abnormalities.
Sulfhemoglobinemia
Methemoglobinemia
Organic acidemia
Cyanide poisoning
Hyperaemia
Isovaleric acidemia
Propionic acidemia
Algaemia