Differential Diagnosis
• Unipolar depression (AKA depression)
• Cyclothymia (chronic, depression plus hypomania, the depressive symptoms don’t
meet the bipolar disorder criteria)
• Schizophrenia (mania, delusions & hallucinations)
• Medical issues (stroke, MS & thyroid disease)
• Substance abuse (stimulant effect from cocaine, ecstasy and amphetamine, they
usually last less than seven days)
• Organic brain disorders (space-occupying lesion, SLE, Encephalitis, AIDS, Epilepsy
& Progressive frontal lobe dementia)
• Metabolic causes (Cushing syndrome, Addison’s, hyperthyroidism Vit B12
deficiency)
• Personality disorder
• Anxiety
• OCD
• ADHD
• Conduct disorders