I'm 37y old woman. since last dec I have had intermittent cough, and over the last few weeks have developed episodes of air hunger/unsatisfied deep breath, chest heaviness/tightness (especially over the sternum), and occasional breathlessness while talking or after exertion. I also have a persistent upper back ache between the shoulder blades that often precedes the air-hunger sensation. Symptoms are triggered by dust, incense smoke, cold/chilly air and temperature changes. Warm humid air feels more comfortable. I occasionally notice wheeze on forced exhalation. Cough is mostly dry with very little sputum; once or twice I coughed up a tiny amount of thick light-yellow mucus. I also have hoarseness, reduced singing ability and reflux/acidity symptoms sometimes. CBC and IgE are normal; Vitamin D is low. ENT suspected allergic bronchitis/CVA and started Foracort Rotahaler, with partial improvement in cough and some episodes of chest tightness... what could it be?