Trebek, 77, was diagnosed in mid-December with a condition known as subdural hematoma, a complication from hitting his head in a bad fall in October, he said.

"He is expected to make a full and complete recovery," the post states, noting that because the show tapes months in advance, its broadcast schedule will be unaffected except for its College Championship, which will now air in April.

Though the iconic host said he suffered a "slight medical problem," a subdural hematoma is considered "among the deadliest of all head injuries," according to the US National Library of Medicine.

Other factors that increase risk of developing such clots are taking certain medicines that thin the blood, long-term consumption of alcohol and repeated head injuries.

Retired Houston Astros coach Rich Dauer, 65, recently recovered from a subdural hematoma after he slipped and hit his head the night before the team's World Series parade in November, according to Bleacher Report.