Great point, Inga!
Pleurisy was my first ever AI symptom, not that anyone recognized that. Then, when I was first diagnosed with Hashimoto's, it was because my whole body went arthritic. My rheum thinks that I was probably having a Sjogren's flare both times because my thyroid was failing.
When my thyroid got back on track, I still had lung issues for a few months (air hunger, pleurisy, etc.), but then they went away, as did the arthritis. One thing going wrong set other things off. When the trigger was controlled, everything else calmed down, too (well, for a few years until SJS really hit).