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Complications
By Mayo Clinic staffMixed connective tissue disease and its treatment can lead to serious complications, including:
- Pulmonary hypertension. High blood pressure affecting the arteries in your lungs (pulmonary hypertension) is the most common cause of death in people with mixed connective tissue disease. You might experience difficulty breathing or chest pain if you have pulmonary hypertension. People with mixed connective tissue disease usually need to take medications to control pulmonary hypertension.
- Heart disease. People with mixed connective tissue disease are at risk of developing heart conditions, including enlargement of parts of the heart and inflammation around the heart (pericarditis). Your doctor may routinely monitor your heart with an electrocardiogram.
- Side effects of long-term corticosteroid use. Corticosteroids are commonly used to manage the signs and symptoms of mixed connective tissue disease. While these medications are effective, they don't come without risks. If you take corticosteroids, your doctor will likely monitor you for adverse effects, such as bone loss due to osteoporosis or avascular necrosis, muscle weakness, and infection.
- Pregnancy complications. Women with mixed connective tissue disease may experience flares during pregnancy. Babies born to women with mixed connective tissue disease are at risk of being born with a low birth weight. If you're planning to become pregnant, talk with your doctor about this risk.
