16 results
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 ... Cold #Urticaria #diagnosis ... #rheumatology #
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
Transverse Myelitis Overview

Focal inflammatory disorder of the spinal cord resulting in rapid onset of weakness, sensory
dysfunction Epidemiology ... bouts of HTN Diagnostic ... Myelitis Diagnosis ... negative, MOG-IgG test ... #Myelitis #diagnosis
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
USMLE Epidemiology ... disease who test ... how related two values ... rishimd #USMLE #Epidemiology ... #calculations #diagnosis
TTP - Laboratory Evaluation for Thrombotic Thrombocytopenic Purpura

Activity of von Willebrand factor-cleaving protease activity - A
activity - A low value ... If the value is ... low, tests to detect ... indirect antiglobulin tests ... #Workup #Hematology
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 ... • Nonsurgical abdominal ... signs #symptoms #rheumatology
Myositis Ossificans in vastus intermedius on POCUS after trauma - Transverse View

Young male with MMA injury
intermedius on POCUS ... after trauma - Transverse ... What is diagnosis ... hypoechoic oval masses ... Ossificans #thigh #POCUS
Polycythemia - Differential Diagnosis Algorithm
Polycythemia itself isn’t a diagnosis. Like many things, it is a condition
- Differential Diagnosis ... an underlying cause ... that a one-off value ... about secondary causes ... Best to have an
Giant cell arteritis (GCA)

Giant cell arteritis (GCA) definition: Most common systemic inflammatory vasculitis in older adults
or sed rate): Value ... GCA, but normal values ... the “Chewing gum test ... identifies 85 to 95% of cases ... them, but urgent rheumatology
Causes of Lactate Elevation, Lactic Acidosis - Differential Diagnosis

The most common causes of hyperlactatemia are usually:
- Differential Diagnosis ... to bolus these values ... / hypoxemia -> focus ... laboratory or diagnostic ... tests before beginning