Diseases have a history, and understanding that history helps us understand how best to treat and control disease today. Today's students are confronted with a panoply of often-frightening illnesses and afflictions - the Biographies of Disease series provides students with the information that they need to understand the origin of various maladies, how they impact contemporary society, and how doctors and researchers from around the world are fighting to devise treatments to alleviate or cure these diseases. This volume, ADHD, examines Attention Deficit Hyperactivity Disorder, the controversial affliction with which millions of boys and girls are diagnosed every year.