Two sets of published diagnostic criteria are available to help differentiate PBA from depression. The first set of diagnostic criteria was developed by Poeck in 1969. 3 These 4 criteria include: ...

Some people with Lewy body dementia (LBW) develop a symptom called pseudobulbar affect (PBA), which can lead to uncontrollable crying or laughter. Around 20–30% of people with dementia receive a ...

Uncontrolled laughing or crying can be more than just a surprising emotional reaction, it may signal a neurological condition called pseudobulbar affect (PBA). PBA causes sudden, involuntary emotional ...

Involuntary crying or laughing are symptoms of a condition known as involuntary emotional expression disorder (IEED). This disorder is common among patients with stroke and other neurological ...

Babies older than 3 months who cry uncontrollably without reason are at greater risk of suffering from lower IQ, hyperactivity and discipline problems in childhood, new research has found. Persistent ...

In January 1962, three schoolgirls at a mission boarding school near Lake Victoria in what was then called Tanganyika began laughing uncontrollably, and what followed would become one of the strangest ...