Positive symptoms seem to represent an excess distortion of normal function.
Negative symptoms seem to represent a reduction or loss of normal function
Delusions: delusions of being controlled, delusions of persecution and delusions of grandeur
Hallucinations: imaginary voices making critical comments or telling Patients what to do
Inappropriate affect: failure to react with appropriate emotion to positive or negative symptoms
Incoherent speech or thought: illogical thinking, echolalia, peculiar association among ideas, belief in supernatural forces
Odd behavior: difficulty performing everyday tasks, lack of personal hygiene, talking in rhymes, catatonia ( remaining in awkward positions for long time)