Psychological disorders, also called mental illnesses, can affect how you think, feel, and behave. Psychological disorders are also called mental illnesses or mental health conditions. They can affect ...

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 ...

Where mood disorders can cause temporary or fluctuating changes in mood, personality disorders cause symptoms that remain consistent over time and across a range of situations. For example, bipolar ...

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 ...

Lissencephaly is a spectrum of rare, genetic disorders in which the brain fails to develop its hallmark folds. The disorders are often associated with seizures and intellectual disability and ...

Roughly every month I receive an e-mail from a parent somewhere in the world asking for help with a child who is violent, angry or aggressive. Some people describe being physically beaten or having ...