Thanks for the query.
The causes for such a discomfort especially on sleeping could be paroxysmal nocturnal dyspnea, cardiac conditions like angina, heart failure, anemia,hemoglobin dysfunctions like sickle cell disease, asthma, blocked nose, sleep apnea, obesity, gastritis, gastroesophageal reflux disease, etc. You may have to see a physician for a complete examination to rule out each of the above causes. Blood, urine and ECG tests may be needed accordingly to arrive at a diagnosis. Propped up position with well-ventilated rooms will help. Also steam inhalations before going to bed, may be a good option to provide symptomatic relief. Avoid heavy meals at night, keep your dinner light and do not immediately go to bed soon after dinner.
Hope this helped.
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