Prolonged coughing, difficulty in breathing, mucus expectoration, pain in the chest, all these symptoms may indicate the initial stages of a respiratory disorder Bronchitis. This respiratory disease is characterized by the inflammation of bronchial tubes. Air passes from the trachea to the lungs through the bronchial tubes. The acute inflammation of bronchial tubes (Acute Bronchitis) usually follows an episode of cold or influenza caused by viral agents. The cold and influenza affect the upper respiratory system, including nose, sinuses, and larynx. In cases of maltreated or neglected cold or influenza, the infection travels in a downward direction and leads to inflammation of bronchial tubes, producing varying symptoms.