Red flag symptoms
1.Systemic symptoms: persistent fever (pneumonia, TB); night sweats, weight loss (TB, lung cancer)
2.Dyspnea (asthma, congestive heart failure, COPD, interstitial lung disease)
3.Hemoptysis (TB, lung cancer); copious sputum production (bronchiectasis)
4.Severe thoracic pain/pleurisy (pneumonia, TB, pulmonary embolism)
5.Change in character of a chronic cough (esp. in a smoker's cough)
6.History of contact with TB and/or HIV