Commerce Secretary John Bryson resigned from the Obama administration, Thursday, in light of his seizure that caused a series of car accidents.
In a letter to the president, Bryson, 68, cited the need for a "medical leave of absence" and said he was concerned about the seizure.
He added that his health "could be a distraction" and that "a change of leadership" would be better for the department.
Bryson crashed into two cars in one night earlier this month.
President Obama issued a statement thanking Bryson for his "invaluable experience and expertise" in renewable energy and strengthening the economy.