My mother is 80 years old, she has restless leg syndrome and COPD, she has had 2 back surgeries for spinal stenosis and gall bladder removed. She takes Mirapex and a water pill daily. Lately she has been having episodes where she shakes very badly, not a seizure, just shaking. She has been very weak and gets dizzy. Currently she was throwing up for 24 hrs and is very cold, has a headache, backache, and is shaking. She had a flu shot 1 week ago, and had blood work done which shows nothing. Her doctor called her in a prescription for an antibiotic yesterday. What could cause this?