Substance abuse is a disease that affects the brain’s chemistry and causes a person to need to drink or use a drug to feel good. If you are addicted to alcohol, drugs, or both, you may be considered to be in a state of substance abuse. Substance abuse is a serious problem that can cause a wide range of negative consequences, including arrests, joblessness, and damaged relationships. Because substance abuse is such a serious issue, it is important that you receive SAP Evaluation help as soon as possible.