Psychiatric effects of drugs and alcohol Flashcards
Common factor model of substance abuse and mental illness
The idea that one common factor predisposes to both substance use and mental illness e.g. genetic factor or socioeconomic status
Secondary use model of substance abuse and mental illness
The idea that patients use substances to alleviate symptoms of mental illness
Supersensitivity model of substance abuse and mental illness
The idea that mentally unwell patients are unusually sensitive to the negative consequences of substance use which leads to a diagnosis of substance use disorder
Secondary illness model of substance abuse and mental illness
The idea that substance use disorders lead to mental illness
Most common hallucinations seen in alcoholic hallucinosis
Unstructured voices or sounds that are threatening
Differences between alcoholic hallucinosis and schizophrenia
Later age of onset of symptoms in alcoholic hallucinosis
Onset of alcohol preceding symptoms in alcoholic hallucinosis
Remission of symptoms during abstinence in alcoholic hallucinosis
Lack of thought disorder in alcoholic hallucinosis
Thought congruence in alcoholic hallucinosis
Classic triad of Wernicke’s encephalopathy
Confusion
Ataxia
Nystagmus
Percentage of patients with Wernicke’s encephalopathy who present with the classic triad
10%
Vitamin deficiency causing Wernicke’s encephalopathy
Thiamine deficiency (vitamin B1)
Type of memory most affected by Korsakoff’s syndrome
Anterograde memory
Are of the brain lesions are most often seen in Korsakoff’s syndrome
Dorsomedial thalamus
Areas of the brain where lesions cause confabulation in Korsakoff’s syndrome
Frontal
Diencephalic
Type of cells in the cerebellum where degeneration is seen in chronic alcohol use
Purkinje cells
Clinical features of cerebellar degeneration associated with chronic alcohol abuse
Limb ataxia
Dysarthria
Clinical features of hepatic encephalopathy due to liver failure
Altered conscious level
Flapping tremor
Hyperreflexia
Extensor plantar reflexes
Syndrome seen in those who make a partial recovery from hepatic encephalopathy
Hepatocerebral degeneration