How is drug abuse different from substance abuse?

Answer:
These terms are often used interchangeably, however, substance abuse is a slightly broader category than drug abuse, since some of the substances that people abuse are not really drugs, such as glue, solvents, etc., which people may inhale in the hope of getting some kind of high.
First answer by Blobbert. Last edit by Blobbert. Contributor trust: 199 [recommend contributor recommended]. Question popularity: 2 [recommend question].