SZ and related disorders

Question 1

DSM crtieria for SZ

Answer 1

A. Two or more* of the following symptoms, present for a significant portion of time, during a 1-month period
*Only one symptom is necessary if delusions are bizarre OR hallucinations consist of a voice keeping a running commentary or two voices conversing

B. Social/occupational dysfunction

C. Continuous signs of disturbance persist for at least 6 months

D. Schizoaffective and Mood Disorder exclusion:

• No mood episodes have occurred concurrently with active-phase Sxs OR
• If mood episodes occurred concurrently, their total duration has been relatively brief

E. Substance/GMC exclusion

F. Relation to Pervasive Developmental Disorder
-If history of PDD, additional dx is only made if prominent delusions or hallucinations are also present for at least a month

Question 2

Sx’s of SZ

Answer 2

Delusions (false belief about reality, held with extreme conviction)
Bizarre vs. Non-bizarre
Referential
Persecutory
Grandiose
Religious

Hallucinations

Disorganized speech (e.g., frequent derailment or incoherence)

Grossly disorganized or catatonic behavior

Negative symptoms

• Affective flattening
• Alogia (poverty of speech/content)
• Avolition (inability to initiate/pursue activities)

Question 3

subtypes of SZ

Answer 3

Paranoid Type (angry, anxious, doesn't have prominent neg symptoms, best prognosis)
Disorganized Type (dis speech, bx, delusions and hallucinations, flat affect, typcially the worse prognosis)
Catatonic Type (mute, increase mvmt, decrease mvmt, echolalia, echopraxia)
Undifferentiated Type (mixed sx presentation - not easy fit)
Residual Type (majority of pos sx's have remitted; neg sx's remain)

Question 4

DSm crtieria for Szaffective

Answer 4

An uninterrupted period of illness during which, at some time, there is either a Major Depressive Episode, Manic Episode, or Mixed Episode concurrent with symptoms that meet Criterion A for Schizophrenia.

During the same period of illness, there have been delusions or hallucinations for at least 2 weeks in the absence of prominent mood symptoms.

Symptoms that meet criteria for a mood episode are present for a substantial portion of the total duration of the active and residual periods of the illness.

The disturbance is not due to the direct physiological effects of a substance (e.g., a drug of abuse, a medication) or a general medical condition.

Question 5

other psychotic disorders

Answer 5

Brief Psychotic Disorder (less than 1 mo)

Schizophreniform Disorder (1-6 mos)

Delusional Disorder (non-bizarre delusion for at least 1mo)

Shared Psychotic Disorder (>1 person)

Psychotic Disorder due to a General Medical Condition

Substance-Induced Psychotic Disorder (intoxication or withdrawal)