<unk> , or<unk> emoglobinaemia, is a condition of elevated<unk> moglobin in the blood. Symptoms may include headache, dizziness, shortness of breath, nausea, poor muscle coordination, and blue-colored skin (cyanosis). Complications may include seizures and heart arrhythmias.<unk>  can be due to certain medications, chemicals, or food or it can be inherited from a person's parents. Substances involved may include benzocaine, nitrates, or dapsone. The underlying mechanism involves some of the iron in hemoglobin being converted from the ferrous Fe2+ to the ferric Fe3+ form. The diagnosis is often suspected based on symptoms and a low blood oxygen that does not improve with oxygen therapy. Diagnosis is confirmed by a blood gas. Treatment is generally with oxygen therapy and<unk> lene blue. Other treatments may include vitamin C, exchange transfusion, and hyperbaric oxygen therapy. Outcomes are generally good with treatment.<unk>  is relatively uncommon, with most cases being acquired rather than genetic.
Methemoglobinemia
Argyria
Sulfhemoglobinemia
Heart failure
Hyperaemia
Hypoxemia
Organic acidemia
Hypercapnia