Welcome, Fran. I am sorry to hear you have lupus too but you have found a great place here. I hope you like it here as well as I do.
A flare is when your symptoms increase or you get new ones. For instance when I flare I get mouth sores, increased joint pain and fatigue. It can also be apparent in your blood work, my rheumy can tell if my lupus is "stirring around" (WBC, RBC, etc) but when I've felt my worst my labs have been ok, including tests that measure inflammation so you mainly see it in your increased symptoms.
A lot of the time it may not be a flare you are experiencing, it may just mean that your lupus is not under control with the right combo of meds. I am sure there are others that will be along shortly.
Take care and let us know how you are doing.
Trust in the Lord with all thine heart, and lean not unto thine own understanding ~ Proverbs 3:5 ~
DX: Hashimoto's 1999, Celiac Disease (AKA: gluten sensitivity) 2003, Raynaud's 2004, Lupus 2005 and Sjogrens 2006
RX: Imuran, Plaquenil, Methotrexate, Flexeril, Piroxicam, Levoxyl, Folic Acid, Lortab (as needed), Magnesium Citrate and magic mouthwash (as needed for mouthsores)