A 58-year-old man in Taipei woke up with stress-induced amnesia that doctors say was triggered by a political TV show and a bout of strenuous constipation the night before. 

Family members were in shock after the corporate executive, surnamed Lin, couldn't remember conversations from minutes before.

He kept repeating questions such as "Where am I going today?", "What do I do?" and "What day is it today?" the Taipei Times reported Wednesday.

Relatives called doctors.

Huang Qixun, a neurologist at Shu Tien Clinic, said Lin suffered from transient global amnesia (TGA) - a sudden temporary episode of memory loss that can be brought on by stress from intense emotion, strenuous exercise, or toiling on the toilet.

Relatives recalled that Li had been irritated the night before watching a political talk show that had angered him.

Lin was also stressed out from chronic constipation, his family said.

Huang explained that TGA has been linked to internal jugular vein valve insufficiency, or venous congestion in areas of the brain associated with memory.

"People with [internal jugular vein valve incompetence] should avoid getting too angry or too excited, doing strenuous exercise or straining too much when suffering from constipation," said Huang.

Taipei Times