Mental health symptoms are variable depending on the type and the severity of the psychiatric disorder.
Studies have shown that 1 in 5 adults will experience some form of mental illness at a point within their lifetime. However, a large proportion of affected people do not ever seek help, diagnosis, or treatment.
The most common mental illness disorder is depression and as with all mental health disorder can be caused by hereditary, social, physiological, physical, and other complex reasons. Behavioral, cognitive, and emotional changes are common symptoms.
Diagnosis of mental health disorders is typically through observation and documentation of symptoms, cross-referenced with the listings within the Diagnostic and Statistical Manual of Mental Disorders (DSM).
Advancements in brain imaging techniques also aid in the precision of diagnosis.
Treatment of mental illness can generally be in two complimentary forms. Drug and physical therapies (including electroconvulsive) along with modern psychotherapies are the current mainstays in treating mental health disorders.
Different mental health diseases are covered below where more specific symptoms can be addressed.