Female Over 60, Low Potassium, Fatigue, Empty Sella Syndrome, Short

Female over 60, low potassium, fatigue, empty sella syndrome, short term memory loss, depression nervous...Patient had been diagnosed in Feb as a touch of pneumonia and diverticulitis and was given Flagyl and Cephalexin. Seems to have had a reaction to antibiotics. Also, after a few days had to go to ER with what appeared to be appendicitis, but was diagnosed as kidney infection. Few wks later, still not well and was given another antibiotic and prednisone. Since then has been back and forth to doctor and nueorologist who saw some type of brain waves during a day time sleep study that caused her to prescribe seizure medication and also Zoloft for depression. Patient is not able to work since April due to memory and nerves. Any ideas.