There are many types of mental illness and, depending on how mental illness is described, 10 or 25% of people living in the United Kingdom can be considered to have had a mental illness at some point in their lives. Like many other illnesses it is common and can occur at any time and happen to any one of us.
Severe mental illness is a term used for longstanding conditions and effects only about 1% of the population. There are many types of mental illness but the easiest way of defining them are as either psychotic or neurotic. Most conditions fit into either of these categories.
Useful websites for further information: