MAC lung disease diagnosis includes a clinical exam, a chest x-ray or CT scan and a lab culture of sputum from your lungs.Symptoms may persist or worsen despite being treated for another lung condition. Common signs and symptoms of MAC lung disease include fatigue, chronic cough, shortness of breath, night sweats, coughing up blood and weight loss.MAC infection is a serious condition that can cause damage to the lungs.Postmenopausal women and people over 65 years old are also more likely to develop MAC lung disease than the general public. These groups include people living with lung disease such as bronchiectasis and COPD, and people with a weakened immune system because of an autoimmune disorder or medical treatment such as drugs that compromise immunity.
Most of the time they cause no harm, but they can cause infection in groups with certain risk factors. MAC organisms are common in soil and water and are easily inhaled during daily activities. MAC is one of a large group of nontuberculous mycobacteria (NTM), and the most common cause of NTM lung disease in the U.S. MAC includes two closely related species, Mycobacterium avium and Mycobacterium intracellulare, and may also be referred to as MAI. MAC lung disease is an infection caused a group of bacteria called Mycobacterium avium complex (MAC).
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