27 results
Sensitivity is the proportion of truly diseased persons in the screened population who are identified as
will correctly diagnose ... a case, or the ... that any given case ... it has a narrow focus ... #Epidemiology #Sensitivity
Cold Urticaria
Prevalence - 0.05% in the population
Disease onset - Mostly 2nd to 4th decades of life
Causes
decades of life Causes ... , abdominal pain ... Disorientation, vertigo Diagnostic ... test, TempTest ... Cold #Urticaria #diagnosis
Causes of Secondary Hypertension - Differential Diagnosis and Screening Testing
Common causes: 
 • Renal parenchymal disease
- Differential Diagnosis ... of renal disease ... • Renovascular disease ... ultrasound; MRA; abdominal ... #Differential #Diagnosis
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
USMLE Epidemiology ... Proves cause-effect ... how related two values ... rishimd #USMLE #Epidemiology ... #calculations #diagnosis
Whipple Disease (Tropheryma whipplei) - Diagnosis and Management 

Caused by: Tropheryma whipplei

Symptoms and Signs:
1. Migratory poly/oligoarthralgia
Whipple Disease ... Management Caused ... Abdominal pain; ... positive T. whipplei tests ... positive T. whipplei test
Primary Adrenal Insufficiency
Addison's Disease - Damage of the adrenal glands with lack of cortisol, androgens and
Insufficiency Addison's Disease ... /vomiting • Abdominal ... Serum DHEAS Diagnosis ... clue • Blood tests ... endocrinology #diagnosis
Leptospirosis
Pathogen: Leptospira (interrogans, kirschneri, noguchii)
Risk Factors:
 • Occupational exposure - Farmers, ranchers, trappers, veterinarians
 • Recreational
non-productive cough, nausea ... ARDS Diagnosis ... : • Epidemiologic ... agglutination - test ... #microbiology #diagnosis
Transverse Myelitis Overview

Focal inflammatory disorder of the spinal cord resulting in rapid onset of weakness, sensory
dysfunction Epidemiology ... Myelitis Diagnosis ... negative, MOG-IgG test ... • Infectious causes ... #Myelitis #diagnosis
Behçet's Syndrome
Systemic disease associated with inflammation of multiple organs, small-vessel vasculitis and large-vessel vasculopathy
Epidemiology:
 • Young
large-vessel vasculopathy Epidemiology ... Positive pathergy test ... is a skin prick test ... ) Differential Diagnosis ... • Nonsurgical abdominal
Adrenal Insufficiency - Diagnosis and Management Summary
Primary Adrenal Insufficiency:
Most Common Cause in the US: Autoimmune Adrenalitis
Other
or metastatic disease ... ) w/ anorexia, abdominal ... , infiltrative diseases ... A STIM test can ... ACTH STIM TEST: