While there are various ways to categorize mental illnesses, the following seven types provide a comprehensive overview of the most common conditions: a. Mood Disorders: Mood disorders, including depression and bipolar disorder, involve disturbances in mood regulation, resulting in persistent feelings of sadness, irritability, or euphoria. b. Anxiety Disorders: Anxiety disorders encompass a range of conditions characterized by excessive worry, fear, and apprehension, such as generalized anxiety disorder (GAD), panic disorder, and social anxiety disorder. c. Psychotic Disorders: Psychotic disorders, such as schizophrenia and schizoaffective disorder, involve disruptions in thinking, perception, and behavior, often leading to hallucinations, delusions, and disorganized thought patterns. d. Substance Use Disorders: Substance use disorders involve the misuse or dependence on substances such as alcohol, drugs, or prescription medications, leading to significant impairment in daily functioning and negative consequences. e. Eating Disorders: Eating disorders, including anorexia nervosa, bulimia nervosa, and binge-eating disorder, involve disturbances in eating behavior and body image, often resulting in severe physical and psychological consequences. f. Trauma-Related Disorders: Trauma-related disorders, such as post-traumatic stress disorder (PTSD) and acute stress disorder, develop in response to experiencing or witnessing traumatic events, leading to symptoms such as intrusive memories, flashbacks, and hypervigilance. g. Personality Disorders: Personality disorders involve enduring patterns of behavior, cognition, and inner experience that deviate from cultural expectations and cause distress or impairment, such as borderline personality disorder (BPD) and narcissistic personality disorder (NPD).