Washington, D.C. ? Waving and smiling, Chief Justice John Roberts walked briskly out of a hospital Tuesday in Maine and resumed his vacation, returning to normalcy a day after he suffered his second seizure in 14 years.

The Supreme Court was mum on whether Roberts would need anti-seizure medication. But specialists say his doctor would have raised that possibility because someone who has had two seizures is at high risk of having another.

Roberts, 52, joins millions of adults who have had seizures for no apparent reason. The court said doctors had found no tumor, stroke or any other explanation.