**Treatment**

Unfortunately, there are no cure for mustard lung disease (11 ).Bronchodilators, inhaled steroids, long- term oxygen therapy, and pulmonary rehabilitation are different therapeutical strategies which are used in these patients (11 ).The combination of long – acting beta agonists (LABAs) and inhaled steroids has been shown to be effective (11,38,39 ).

In mustard lung patients, systemic steroid is only recommended during exacerbations (11).The prolonged use of systemic steroids should be avoided because of severe complication (39).

As we mentioned earlier, the oxidative – antioxidative imbalance may be an underlying mechanism in mustard lung patients. So the potent antioxidant agents are tried for this purpose. N-Acetylcysteine is an antioixidat and mucolytic drug that in double- blind clinical trial, improved dyspnea, cough, and sputum after 4 months of treatment (11,40).
