RLS
zkadhem - 07-05-09 20:11

A 53-year-old African American woman presents to clinic at the insistence of her husband. Her husband accompanies her and reports that for quite some time, his wife has been extremely restless when she is sitting, resting, or lying down at night. She has trouble falling asleep in bed, which in turn keeps him awake. The woman adds that the restlessness comes about every night when she feels a strange sensation that she compares to an "internal itch that creeps up the lower legs." The sensation compels her to get up and pace the floor, and is worse when she is feeling particularly anxious or fatigued. Her medical history is significant for well-controlled hypertension, gastroesophageal reflux disease, allergic rhinitis, and tension headaches. She is currently taking hydrochlorothiazide, omeprazole, and ibuprofen. She does not smoke or use recreational drugs, but consumes 1-2 alcoholic drinks on the weekends. There is no family history of similar problems. Physical examination is unremarkable.Which of the following studies is most appropriate to order?