Credit: Getty Images Some rare psychological disorders may occur so infrequently that most mental health professionals might never encounter them. Approximately 1 of every 5 adults in the United ...

Dimensional models of personality disorders are increasingly popular, but do they obscure real clinical syndromes?

Comorbidity is when a person has more than one health condition at once. Researchers investigating the comorbidity of personality disorders have found people with certain disorders may have other ...

I first met Glenn Saxe at the St. Regis Hotel in New York City through an introduction from a senior mentor. From our first conversation, I recognized him as a rare genius—someone who has applied his ...

Psychologists typically do not diagnose children with personality disorders. This is because their personality is still developing and can change quickly as they grow. However, a child may show early ...

Tic disorders are conditions featuring sudden, non-rhythmic movements or vocalizations. A formal tic disorder diagnosis is determined by tic frequency, duration, and type. Tics are non-rhythmic ...

This article is the next in The Conversation’s six-part series on insomnia, which charts the rise of insomnia during industrialisation to sleep apps today. Read other articles in the series here. The ...