Brief Answer: Acute non productive cough, CUAS & Asthma Detailed Answer: Good Day Sir! My name is Dr S Khan and i would like to help you with the issue of persistent cough for 3 weeks with your son which leads to choking and breathing difficulties. Madam as you mentioned in the history that the baby is allergic to dust mite, this cough gets multidiretional in etiologies in which asthma and chronic upper airway syndromes and allergic bronchitis are on the top.Presence of gastroesophageal reflux may also lead to cough and these associated symptoms. Absence of gag Reflex might also present with these symptoms. With clear lungs and no fever i wonder why antibiotics then. If the kid is not responding to cough medicines and antibiotics for 3 weeks, this is the time for some work up. Age of 16 is too young to have some serious issue, All it needs is a relief from cough and that would be possible once the trigger is found.And finding that needs some work up. I want you to visit near by otorhinolaryngologist and pulmonologist for sorting out the etiology for the cough. Meanwhile you can try codein, dextromethorphans, Garlic water gargles, aspirin gargles and bronchodilators for the relief. Too early to mention diagnosis. Needs work up before saying any thing. Hope this answer finds you in good faith. Kindly do as directed and let me know if any further queries you have. Please close the discussion and rate the answer as per your experience. Regards Dr S Khan

---