Pulmonary toxicity in patients undergoing HCV combination treatment is rare, and may include interstitial pneumonitis, sarcoidosis, pleuritis, bronchiolitis obliterans organizing pneumonia (BOOP), and exacerbation of asthma [6, 7] . Pneumonitis occurs only rarely as a side-effect of HCV combination therapy and can arise at any stage of the treatment. Most commonly it presents with cough, which is difficult to differentiate from the ubiquitous cough that may occurs as a common side-effect of combination treatment.