Schizophrenia is a severe mental illness, which disrupts how someone thinks, their understanding and perception of the world around them, including what they see or hear. Quite often the condition will cause psychotic symptoms, which means the distinction between thoughts and reality become blurred - a person may experience delusions or hallucinations.
This can make the condition alarming and confusing for both the person affected, and their family and loved ones. Schizophrenia tends to develop when people are in their late teens or twenties. And while it is normally a lifelong condition, the symptoms are treatable and most people affected will get better over time.