Generalized Anxiety Disorder
Generalized anxiety disorder is characterized by persistent or excessive worrying, difficulty making decisions and an inability to relax. GAD can even cause physical symptoms, including fatigue, muscle aches, trouble sleeping, sweating, trembling and nausea. Some people with GAD start drinking or using drugs to cope with their excessive worrying, leading to a dual diagnosis that requires integrated treatment.
Bipolar disorder is often diagnosed in people with addictions to drugs or alcohol, making it one of the most common co-occurring disorders. One of the main symptoms of bipolar disorder is severe mood swings that can interfere with a person’s ability to maintain personal relationships or carry out normal daily activities. Bipolar I disorder is diagnosed in people who’ve had at least one manic episode, which can cause increased agitation, jumpiness, racing thoughts, impulsivity or an exaggerated sense of confidence.
Bipolar II disorder is diagnosed in people who’ve had at least one major depressive episode and one episode of hypomania, which has the same symptoms as an episode of mania. Major depressive episodes can cause sadness, fatigue, suicidal thoughts, difficulty concentrating or restlessness, among other symptoms.
Anorexia, bulimia and other eating disorders are among the most common co-occurring disorders. People with these disorders tend to be preoccupied with their weight, causing them to develop harmful relationships with food. Anorexia typically causes people to believe they’re overweight even when they’re at a normal weight or even underweight, resulting in restricted eating, an intense fear of gaining weight and emaciation. Bulimia is characterized by episodes of binging and purging, which can cause sore throat, acid reflux, worn tooth enamel, dehydration and electrolyte imbalances.
Borderline Personality Disorder
BPD is a mental health condition that affects the way people think about themselves and their relationships. Someone with this disorder typically fears abandonment and desires stable relationships with loved ones, but distorted thinking causes behaviors that can push other people away. For example, someone with borderline personality disorder may have frequent mood swings or engage in impulsive behavior.
Post-Traumatic Stress Disorder
PTSD often develops in people who’ve experienced or witnessed some type of trauma. This mental health condition has been linked to military service, natural disasters, sexual assault, childhood trauma and bullying. People with PTSD typically have disturbing thoughts, flashbacks or intense nightmares long after the initial trauma occurs, which can interfere with daily life and increase the risk of drug abuse or alcohol abuse.