Hi my wife suffering with continuous cough specially at night. Coughing may sometimes last for 2-3 Hrs.cough may initiate while talking, laughing or any excitement She usually get cold once in a week. She also have problem of acidity. She is facing this issue from last one year intermittently , as we have shifted our home location. We though it is due to Dust allergies and we are taking proper care. Kindly provide proper guidance or medication for this Thanks