Certain infectious and parasitic diseases

of epilepsy or other brain disease should be classified under F06.2, and those
induced by psychoactive substances under F10-F19 with common fourth
character .5.
Excludes: schizophrenia:
· acute (undifferentiated) ( F23.2 )
· cyclic ( F25.2 )
schizophrenic reaction ( F23.2 )
schizotypal disorder ( F21 )
F20.0 Paranoid schizophrenia
Paranoid schizophrenia is dominated by relatively stable, often paranoid
delusions, usually accompanied by hallucinations, particularly of the auditory
variety, and perceptual disturbances. Disturbances of affect, volition and speech,
and catatonic symptoms, are either absent or relatively inconspicuous.
Paraphrenic schizophrenia
Excludes: involutional paranoid state ( F22.8 )
paranoia ( F22.0 )
F20.1 Hebephrenic schizophrenia
A form of schizophrenia in which affective changes are prominent, delusions and
hallucinations fleeting and fragmentary, behaviour irresponsible and
unpredictable, and mannerisms common. The mood is shallow and inappropriate,
thought is disorganized, and speech is incoherent. There is a tendency to social
isolation. Usually the prognosis is poor because of the rapid development of
"negative" symptoms, particularly flattening of affect and loss of volition.
Hebephrenia should normally be diagnosed only in adolescents or young adults.
Disorganized schizophrenia
Hebephrenia
F20.2 Catatonic schizophrenia
Catatonic schizophrenia is dominated by prominent psychomotor disturbances
that may alternate between extremes such as hyperkinesis and stupor, or
automatic obedience and negativism. Constrained attitudes and postures may be
maintained for long periods. Episodes of violent excitement may be a striking
feature of the condition. The catatonic phenomena may be combined with a
dream-like (oneiroid) state with vivid scenic hallucinations.
Catatonic stupor
Schizophrenic:
· catalepsy
· catatonia
· flexibilitas cerea
F20.3 Undifferentiated schizophrenia
Psychotic conditions meeting the general diagnostic criteria for schizophrenia
but not conforming to any of the subtypes in F20.0-F20.2, or exhibiting the
features of more than one of them without a clear predominance of a particular
set of diagnostic characteristics.
Atypical schizophrenia
Excludes: acute schizophrenia-like psychotic disorder ( F23.2 )
chronic undifferentiated schizophrenia ( F20.5 )
post-schizophrenic depression ( F20.4 )
180 WHO’s ICD-10