I had real problem when doing Sprint Triathlons swim. This was rare until 2024 and started happening each time.

PCP referred me to for Pulmanary testing after some issues with CT. I had every breathe in/out type test. Then inhaled 3 mists, then did a walk up a latter tests. Pulmanary tests did not reveal asthma. However after reading the posts above I did not have the mucous tests, sweat tests, nor was it mentioned. None of the test duplicated the trigger I am now getting when doing swim portion of race. I train twice a week swimming a mile with no issues. The most common length of Sprint Triathlon swim is 1/4 mile.

I then met with Pulmanologist who said the tests did not reveal asthma. But no attempt to find out just what is causing. My PCP and I still think I have Asthma.

When swimming in race I use a snorkle because of neck problems. At some point in all recent races I feel like I cannot get enough air into my lungs. The feeling of I can breathe deep enough. Then I start coughing. The coughing is full of phelm and mucous from bronchial area. I have had to quit swim last 3 times out. I have done about 50 races since 2017 and did not start having problem until end of 2023 and beginning of 2024.

Not sure how to address this further but have upcoming visit with PCP. Any comments?