The lowest temperature reported in Illinois was -36Â°F in Congerville on January 5, 1999. The most rainfall from a single event was 16.94 inches in Aurora during a 24-hour period spanning July 17-18, 1996.
Both men and women are affected at the same rate. There are few risk factors that reliably predict a significant increased likelihood of being diagnosed with bipolar disorder. Genetics and oneâs family history appear to both have some influence over the likelihood of being diagnosed with bipolar disorder. Bipolar disorder is more common in those who have a sibling or parent with the illness and in families having several generations affected with mood disorders. Differing rates of bipolar disorder have not been reported for different races.
Experts believe bipolar disorder is partly caused by an underlying problem with specific brain circuits and the balance of brain chemicals called neurotransmitters. Three brain chemicals -- noradrenaline (norepinephrine), serotonin, and dopamine -- are involved in both brain and bodily functions.. A. Doctors don't completely understand the causes of bipolar disorder. But they've gained a greater understanding in recent years of the bipolar spectrum, which includes the elated highs of mania to the lows of major depression, along with various mood states between these two extremes.