(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.
Understanding Bipolar Disorder: Symptoms The primary symptoms of bipolar disorder are periods of elevated or irritable mood accompanied by dramatic increases in energy, activity, and fast thinking. The illness has two (bi) strongly contrasting phases (polar): 1) bipolar mania or hypo-mania and 2) depression.