What is mental illness or mental disorder? According to the National Alliance on Mental Illness, mental illness is defined as a condition that negatively affects a person's thinking, feeling or mood for a sustained period of time.

You might be wondering “Is depression a mental illness? What about anxiety?” Yes, they are. In fact, they are the most common types of mental illnesses. In this video, we cover 10 of the more common mental illnesses: Anxiety, Personality, Attention Deficit Hyperactivity Disorder, PTSD, Depression, Bipolar Disorder, Eating Disorders, Obsessive-Compulsive Disorder, Autism Spectrum Disorder, Schizophrenia or Psychotic Disorders.

Source: Psych2Go