Mind-blowing sex: American woman suffers amnesia after intercourse

"Transient global amnesia” or TGA is an attack in which a person suffers sudden loss of memory. Its cause is by pressure in blood vessels in the brain , and can be triggered by strenuous activities, bowel movements, or – commonly – sex.

Alice, a 59-year-old woman,had the worrying experience after she and her husband Scott had sex last August. Alice suddenly & temporarily, lost all memory of the last several years and the ability to form new memories.

After sex, Scott (Alice's husband) turned on the television, on which the Beijing Olympics were being telecasted, and Alice asked Scott : "Is there an Olympics?"

Scott told a news channel: "I saw that something was wrong, so I asked her, 'OK what day is it?'"

When she couldn’t answer, he asked her the name the current President, to which she replied: "Bill ClintonBill Clinton." Scott called an ambulance and she was taken to hospiatl, where it was initially thought she may have had a stroke.

However, neurologists were soon able to diagnose Transient global amnesia, a relatively common experience in the over-50s.

Dr Louis Caplan, professor of neurology at Harvard Medical School, said: "[Sex] is actually a well-known precipitator.

"One of the things people have done to look at transient global amnesia is to look at frequency of various precipitants and sex always comes out as one of the most common."

People with a history of migraines and severe headaches are more prone to this disease.

Although her memory has otherwise returned fully, Alice remains unable to remember the act of intercourse that triggered her attack. However, it is likely that she enjoyed herself.

Dr Caplan said: "It usually is after climax that [TGA] develops."