Lupus when active seems to have more symtoms, and rash usually developes especially after sun exposure.
Has the doctor considered that it could be shingles?
It roots from the herpes virus, which, from what I understand is something that lies dorment in everyones body. People with high stress levels, too many working hours, and with poor diets could be more susceptible to having it flare up.
These symptoms are identical to those of my friend.
She had shingles and it was easily treated.
Good luck, please let us know how it goes.