Migraines

 Word is that Michele Bachmann is frequently incapacitated by stress-induced headaches.

 "The Minnesota Republican frequently suffers from stress-induced medical episodes that she has characterized as severe headaches. These episodes, say witnesses, occur once a week on average and can “incapacitate” her for days at time. On at least three occasions, Bachmann has landed in the hospital as a result.
“She has terrible migraine headaches. And they put her out of commission for a day or more at a time. They come out of nowhere, and they’re unpredictable,” says an adviser to Bachmann who was involved in her 2010 congressional campaign. “They level her. They put her down. It’s actually sad. It’s very painful.”"

 Good thing she isn't looking for a job that has a high stress level or anything...