For the last 20 days I have had a breathing/inhaling discomfort where I feel unable to take a fully satisfying deep breath. It is worse in hot and humid weather and improves in AC. Symptoms are usually less in the morning and at night. This started after a few panic/anxiety episodes about a month ago, for which my doctor prescribed Nexito 10 and Zapiz 0.5. Even when I don't feel anxious, the breathing issue can still occur, although it makes me anxious when it happens. ECG was normal except sinus tachycardia. CBC, sodium, potassium and TSH were normal, CRP was 21 and ESR was 12. I also have mildly elevated liver enzymes. Two doctors examined my lungs and said they sound clear. Could this be anxiety-related or does it suggest a lung problem?