Growing up in DeKalb, Ill., west of Chicago, he acted in school plays and was a goalie on the soccer team. A photograph taken at his prom in 1982 shows a handsome young man with a messy mop of dark brown hair.

But in 1984, in his freshman year at Beloit College in Wisconsin, Kauffman suffered a breakdown and was diagnosed with the most severe form of bipolar disorder. He returned home and, after medication stabilized his condition, enrolled in Northern Illinois University. He graduated from there in 1989 with a degree in political science.

For the next year, he worked as a bus driver ferrying senior citizens around DeKalb. In a short local newspaper profile of him in 1990, he listed his favorite book as "Catch-22," his favorite musician as Elvis Costello, and his favorite moment in life as a soccer game in which he had made 47 saves. A few months later, he followed his mother and stepfather to Atlanta and enrolled in Georgia State University, hoping to earn a master's degree in political science.

"He wanted so much to become a political science professor," Beik said.

But trying to work while attending school proved to be more stress than Kauffman could handle, Beik said. In 1992, he suffered his most severe psychotic breakdown. He traveled around the country, telling his parents he intended to work on a political campaign. Instead, he spent much of the year homeless, and his medical records show that he was repeatedly admitted to hospitals.

Kauffman returned home at the end of 1992, but he never completely recovered, Beik said. He never worked again, and he rarely dated.

In 1994, the Social Security Administration deemed him permanently disabled and he began to receive disability payments. He filed for bankruptcy that year. According to the filing, he had $110 in assets — $50 in cash, a $10 radio and $50 in clothes — and about $10,000 in debts.

From 1992 to 2000, Kauffman did not suffer any psychotic breakdowns, according to his mother. During that period, he took lithium, a mood stabilizer commonly prescribed for people with bipolar disorder, and Stelazine, an older anti-psychotic drug. With the help of his parents, he moved to an apartment complex that offered subsidized housing.

But in late 1999, a psychiatrist switched him from lithium, which can cause kidney damage, to Depakote, another mood stabilizer. In early 2000, Kauffman stopped taking the Depakote, according to his mother.

As the year went on, he began to give away his possessions, as he had in previous manic episodes, and became paranoid. During 2000, he was repeatedly hospitalized, once after throwing cans of food out of the window of his sixth-floor apartment.