Differential Diagnoses

Question 1

Ddx of Schizophrenia

Answer 1

Paranoid schizophrenia, substance-induced psychosis, schizoaffective disorder, severe depressive episode with psychotic symptoms, organic causes (thyroid dysfunction, temporal lobe epilepsy)

Question 2

Ddx of GAD

Answer 2

Depression, panic disorder, other anxiety disorders, substance misuse, organic causes (hyperthyroidism, pheochromocytoma, migraine, anaemia, B12/folate deficiency, arrhythmia, MVP, hypoglycaemia)

Question 3

Ddx of Manic Episode

Answer 3

Hypomania, substance-induced psychosis, organic causes (stroke, hyperthyroidism, Cushing’s, SOL), schizophrenia, schizoaffective disorder, acute confusional state

Question 4

Ddx of Depression

Answer 4

Depressive/Recurrent depressive episode (grade severity), substance-induced mood disorder, organic (hypothyroid, anaemia, hypoglycaemia), adjustment disorder, BPAD, schizoaffective disorder

Question 5

Ddx of Delirium

Answer 5

Organic delirium, DT, substance-induced psychosis, schizoaffective disorder, paranoid schizophrenia, GAD

Question 6

Ddx of Anorexia Nervosa

Answer 6

AN, BN, Depression, delusional disorder (hypochondriacal delusions about body), paranoid schizophrenia, schizoaffective disorder, OCD, substance misuse, organic (thyroid, Addison’s, Crohn’s)

Question 7

Ddx of Alcohol

Answer 7

Alcohol withdrawal with DT, delirium (organic), Wernicke’s or Korsakoff’s, paranoid schizophrenia, severe depressive episode with psychosis, mania with psychosis

Question 8

Ddx of paranoid demented person

Answer 8

Paranoid schizophrenia, psychotic depression, bipolar disorder, schizoaffective disorder, other causes of dementia, organic (MS, SLE,, neurosyphilis, drug-induced cerebellar disorder)