It is hard to say what might be a symptom of Lupus, since Lupus presents very differently from person to person. Since Lupus is basically an over-active immune system, it can randomly decide to attack anywhere in our bodies to make things swollen, inflamed, or otherwise odd.
The best thing to due is to note EVERYTHING that you are experiencing that is the slightest bit different than your 'normal'. That way you will be sure that all the information that the Dr can use to help with the diagnosis is available to him/her. Much better to give them too much information than too little!
Lynnwood, Lupus & Sjogren's Moderator, Dx: 2002DIAGNOSING LUPUS & HW's LUPUS 101
"Life is far too important to be taken seriously." - Oscar Wilde