...  Lessons : Types of Dual Diagnosis – Types of dual diagnosis include chemical dependency and eating disorders. Learn how dual diagnosis disorders are often only treated for one-half of the illness with information from alicensed mental health counselor in this free video on psychology. Expert: John Bosworth Bio: John Bosworth is a licensed mental health counselor who specializes in the treatment of anxiety, depression, substance abuse, chronic pain and stress management. Filmmaker: Christopher Rokosz   Keeping Posted for March 21 Filed under: dual ...