When these concerns cause frequent stress and affect your ability to function, it may become a mental illness. A mental illness is a common, but treatable, health condition that can interfere with your daily life.
Examples of signs and symptoms of mental illness include:
- Feeling sad or depressed
- Changes in eating habits or sex drive
- Loss of interest or detachment from things you once enjoyed
- Hearing voices
- Experiencing paranoia, delusions or hallucinations
- Mood changes of highs and lows
- Difficulties concentrating or thinking
- Thoughts of harming yourself or others
- Substance abuse
Mental illnesses are often physical as well as emotional and psychological. They may be caused by a reaction to environmental stresses, genetic factors, biochemical imbalances, or a combination of these.
Examples of mental illnesses include:
- Depression
- Obsessive-Compulsive Disorder (OCD)
- Attention Deficit Disorder (ADD)
- Eating disorders
- Schizophrenia
- Post-Traumatic Stress Disorder (PTSD)