(Cugnotâs second model weighed 8,000 pounds and had a tendency to tip forward when it wasnât hauling heavy artillery behind it.) As a result, some observers argue that the first true automobile was gasoline-powered. They point to not one but two inventors: Karl Friedrich Benz and Gottlieb Daimler.
Pediatric bipolar disorder is commonly characterized by outbursts of anger, irritability and psychosis, rather than euphoric mania, which is more likely to be seen in adults. Early onset bipolar disorder is more likely to manifest as depression rather than mania or hypomania.
Impulsiveness. Manipulative behavior. Bipolar disorder symptoms, on the other hand, include episodic, dramatic shifts from an overly elated mood to severe depression. During manic periods, people with bipolar disorder experience excessive energy, insomnia, irritability, racing thoughts, and difficulty concentrating.