Cobain was diagnosed with attention-deficit hyperactivity disorder and bipolar disorder. He started using drugs when he was a teenager. He often used heroin. Cobain also had chronic bronchitis. He used drugs to self-treat his undiagnosed stomach condition. Later in his career, he was admitted to special drug treatment hospitals several times. The last time he was admitted, he escaped to his home. Cobain committed suicide by shooting himself with a gun and taking an overdose of heroin in 1994. Although conductor David Woodard had built a Dreamachine for Cobain, reports that Cobain had been using the psychoactive device excessively in the days leading up to his suicide were contradicted by later findings. Cobain is a member of the '27 club' of popular musicians who have died at the age of 27, often from drug abuse.