A small carriage propelled by a steam turbine powered engine was apparently invented by Ferdinand Verbiest, a Belgian, in 1672 while in China. It is argued that this constitutes the first 'car' ever invented, but the design was only 65cm long, had no seats or pilot controls, and was intended as little more than a toy.
The adolescent with bipolar disorder is more likely to have depression and mixed episodes, with rapid changes in mood. Symptoms of bipolar disorder in women tend to include more depression and anxiety as well as a rapid-cycling pattern compared to symptoms in men.
Symptoms of mania and depression can vary dramatically among people with bipolar disorder. All people with bipolar disorder experience mood swings, but the severity of these mood swings can vary. In the form of bipolar disorder known as bipolar I, there are recurrent episodes of mania and depression.