Methemoglobinemia is a rare blood disorder in which an abnormal amount of methemoglobin is produced. Methemoglobin is a type of hemoglobin that cannot carry oxygen effectively. As a result, the body's tissues do not receive enough oxygen, leading to symptoms such as shortness of breath, fatigue, and cyanosis.

Causes

Methemoglobinemia can be inherited or acquired.

• Inherited methemoglobinemia is caused by a genetic mutation that affects the production of enzymes that convert methemoglobin back to regular hemoglobin.
• Acquired methemoglobinemia can be caused by exposure to certain drugs, chemicals, or toxins, such as nitrites, anesthetics, and certain antibiotics.

PC

The symptoms of methemoglobinemia can vary depending on the severity of the condition. Mild cases may not cause any symptoms, while severe cases can be life-threatening. Common symptoms include:

• Shortness of breath
• Fatigue
• Cyanosis (blue discoloration of the skin)
• Headache
• Dizziness
• Confusion
• Rapid heart rate
• Seizures
• Coma

Investigation

Methemoglobinemia level