Schizophrenia is classified according to the most common
symptoms the person has.
The most common type of schizophrenia is paranoid schizophrenia. People with
paranoid schizophrenia have frightening thoughts and hear threatening voices.
This causes them to act afraid or to argue with other people. Sometimes people
with paranoid schizophrenia attack other people or objects in their
surroundings because they are afraid of them. This type often develops later in
life than other types of schizophrenia. People with paranoid schizophrenia
often get better with treatment.
Disorganized schizophrenia. Disorganized schizophrenia is rare but is the most
serious type of schizophrenia. People who have this type have unpredictable
behaviors. They may act silly and giggle for no apparent reason. They often
make up words and sentences that make no sense to other people. And they often do not show facial expressions. Disorganized schizophrenia is
sometimes called hebephrenic schizophrenia.
Catatonic schizophrenia. Catatonic schizophrenia is rare.
People with catatonic schizophrenia have episodes in which they sit or stand
like a statue for long periods of time (catatonic stupor). They
also can have episodes of meaningless and intense activity (catatonic excitement).
During these episodes of intense activity, they may injure themselves or other
Undifferentiated schizophrenia refers to schizophrenia in which the symptoms do
not fit the other types of schizophrenia.
Residual schizophrenia. Residual
schizophrenia refers to the continued presence of symptoms of schizophrenia
How this information was developed to help you make better health decisions.