Patient Controlled Administration of Methylphenidate for Cancer Related Fatigue - PRN Methylphenidate

5 mg tablet by mouth as needed every 2 hours for participant described significant fatigue. Participants to take a maximum of 20 mg/day, for total of 28 tablets for 7 days.

Participants to have evaluation of their fatigue, ability to sleep, and will answer a set of general symptom questions at baseline visit, daily while on study drug, and on seventh day of treatment.