There are five common stages of development; birth, infancy, adolescence, adulthood, and old age. Development occurs throughout these stages. If during on of those stages a break in development occurs an individual is likely to develop a mental disorder such as psychosis and/or schizophrenia (Hansell & Damour, 2008).
There have been many theories on the causes of mental disorders. Some of the earliest include possession by demons or the devil, or physical factors such as pressure on the brain. Today research explores four main factors; genetic, biochemical, psychodynamic, and social. If a child has a parent, grandparent or sibling with schizophrenia than that child is more likely to inherit the disease. Another cause linked to schizophrenia is abnormal brain function. Underactive frontal lobes can cause sensory perception complications increasing the likeliness of a schizophrenia diagnosis. …show more content…
The paranoid schizophrenia subtype includes the presence of auditory hallucinations or prominent delusional thoughts about persecution or conspiracy. Individuals with this diagnosis are higher functioning and usually do not experience onset until later stages of life. The disorganized subtype has disruption in the thought process. This disruptions so severe it interrupts daily activities. Sufferers will exhibits erratic and inappropriate emotions. The catatonic schizophrenia experiences disturbances in movement sometimes including lack of movement all together. In undifferentiated schizophrenia an individual will experience several symptoms from the above types, but the symptoms don’t exactly fit the criteria for the other kinds of schizophrenia. The residual subtype occurs when signs or symptoms of schizophrenia no longer prominent. Some hallucination, delusions, and other symptoms may be present but they are not recognized as being acute (Hansell & Damour,