Since she was an infant, a 31-year-old woman had been experiencing bursts of uncontrollable laughter, but her condition had never been formally diagnosed until now. According to the woman, she would ...

The symptoms: The woman visited a clinic because she had long experienced bursts of uncontrollable laughter, which doctors described as "mirthless" in a report of her case. According to the patient, ...

Michelle Spear does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

A woman had experienced sudden bursts of uncontrolled laughter her whole life. A brain scan revealed why. When you purchase through links on our site, we may earn an affiliate commission. Here’s how ...