A clinical diagnosis; however if entertaining other organic causes may initiate workup below
Point-of-care glucose
CBC
Chem 7
LFTs
ECG (for toxicology evaluation)
ASA level
Tylenol level
Urine toxicology screen/Blood toxicology screen
EtOH
Urine pregnancy/beta-hCG (if female of childbearing age)
Consider:
Ammonia (see Hepatic encephalopathy)
TSH (hypo or hyperthyroidism may mimic mental illness)
CXR (for Tb screen or rule-out delirium in older patient)
UA (for rule-out delirium in older patients)
Head CT (to rule-out ICH in patients with AMS)
Lumbar puncture (to rule-out meningitis or encephalitis)
Ammonia (see Hepatic encephalopathy)
TSH (hypo or hyperthyroidism may mimic mental illness)
CXR (for Tb screen or rule-out delirium in older patient)
UA (for rule-out delirium in older patients)
Head CT (to rule-out ICH in patients with AMS)
Lumbar puncture (to rule-out meningitis or encephalitis)
Avoidant personality disorder
Anxiety disorders
Dependent personality disorder
Other personality disorders
Histrionic personality disorder
Personality change due to another medical condition
Borderline personality disorder
Substance use disorders