Is it normal fatigue or a lupus flare: learn the difference
It is normal to be tired at the end of the day, especially if you have been physically active. If you have lupus and your work or home life requires high levels of energy, it is normal to feel exhausted. Not every bout of fatigue is a lupus flare. The best way to determine whether or not you are having a flare is to learn about the symptoms and triggers, track them carefully, and keep the lines of communication open between you and your doctor.
There is a formal definition of a lupus flare that may help you better understand what level of fatigue constitutes the onset of a flare:
A flare is a measurable increase in disease activity in one or more organ systems involving new or worse clinical signs and symptoms and/or lab measurements. The increase must be considered clinically significant by the assessor (physician or clinical researcher), and in most cases should prompt the consideration of a change or an increase in treatment.