Substance induced mental Disorders

Substance-induced disorders are the result of substance use, abuse, intoxication, or withdrawal and they are distinct from mental disorders that co-occur with SUD.
Symptoms of substance-induced mental disorders are the direct result of substance use. Most common mental disorder among persons with SUD are Anxiety and Depression at various degree and some drugs like Marijuana etc lead to psychotic disorders too.
Substance Induced Mental Disorders vary from mild anxiety and depression to full-blown manic and psychotic reactions. Withdrawal often produces symptoms that are the opposite of the effects of the substance.

• Acute withdrawal symptoms for physiological depressants(alcohol and benzodiazepines) are hyperactivity, elevated blood pressure, agitation, and anxiety
• However, withdrawal symptoms for stimulantsare fatigue and depression
  Psychotic symptoms are caused by heavy and long-term amphetamine abuse. Dementia (problems with memory, concentration, and problem-solving) is caused by using substances directly toxic to the brain (alcohol, inhalants, and amphetamines, etc).

Substance use can also mask symptoms of mental disorders:

• Might lead to behavioral crises
• Might delay appropriate treatment
  Addiction itself is defined as a brain disease which distort our perceptions, thinking, feelings and behavior. Addiction can result in causing delusions, hallucinations, paranoia, depression, phobia, social anxiety and other psychiatric disorders