Hi Renee . . . nice to meet you.
The immune system (which normally attacks invading germs and disease) will attack our own healthy tissue. This is called auto-immune. There are several auto-immune diseases . . . lupus is just one of them. With lupus, the immune system will attack the covering or the lining of any organ. This might include (but will be a different combination for each of us with lupus) the skin (rashes, sores), connective tissue (joints or covering on tendons), the kidneys, lungs, heart. With the lungs, it can cause Pleuritis: inflammation of the sac around the lung, Pneumonitis: inflammation of the lung, and Pulmonary emboli: blood clots in the lung and some other issues.
Yes . . . if you are having lung issues, you should talk to your doctor about it. I know that Babs (Mom46) has had some huge lung involvement, but I can't remember for sure which of the other members have lung issues. If you start a new topic about "Lung Involvement" those members will answer any of your questions.
I'm not sure how much you already know about Lupus, but I found a l-o-n-g s-l-o-w tutorial which I have not watched but may fe helpful if you need basic informaiton on Lupus. Here is the link: http://www.nlm.nih.gov/medlineplus/tutorials/lupus/htm/_no_50_no_0.htmhave
There are also some clickable links at the end of my signature which will give you lots of information on Lupus.
I hope that helped answer your question.
Blessings!