35 results
Fever Patterns - Differential Diagnosis Framework

Continuous Fever:
Temp > 38°C with only 1 degree fluctuation in 24
and bacterial infections ... Pyogenic/focal infection ... Causes: • Still's ... Brucellosis • Liver ... or lung abscess
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
polymicrobial infection ... • Most common cause ... : • 80% have fever ... decubitus - air fluid level ... #differential #causes
Vibrio Vulnificus skin infection
Cirrhosis w/recent consumption of raw oysters w/rapidly evolving rash. 
Vibrio vulnificus part of
marine microbiota & causes ... Rapid onset of fever ... sepsis: chronic liver ... Diseases Fellowship ... rash #cellulitis #dermatology
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
SLE) - Viral infections ... deficiency • Liver ... APLS • Acute Infectious ... mountain spotted fever ... #nonpalpable #dermatology
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
Lung Infections ... Diagnosis Framework Disease ... angioinvasive disease ... lymphadenopathy, • Abdominal ... #Infections #HIV
Erythemas Summarized
Erythema ab igne
 • A dermatosis that results from repeated exposure to heat (fires, heating
known as rat bite fever ... or Haverhill fever ... cancers, including lung ... infectiosum • Fever ... acute rheumatic fever
Nontuberculous Mycobacteria (NTM) Infections 

Mycobacterial species other than those belonging to the Mycobacterium tuberculosis complex and
status NTM Cause ... Presentation: Fever ... (elevations of liver ... Manifestations: • Fever ... • Fever and weight
Common Variable Immunodeficiency (CVID)

What?
CVID: Immunodeficiency disorder with hypogammaglobulinemia -> increased infection risk secondary to impaired B-cell
• Chronic lung ... • Liver diseases ... lymphocytic interstitial lung ... Low serum IgG level ... DDX - Other causes
Macrophage Activation Syndrome (MAS)
Classified among the secondary or acquired forms of haemophagocytic lymphohistiocytosis (sHLH)

What?
A subset of
• Periodic fever ... multiorgan failure • Fever ... - Nonremitting fever ... rash) • Heart, lung ... thrombocytopenia • Liver
Cold Urticaria
Prevalence - 0.05% in the population
Disease onset - Mostly 2nd to 4th decades of life
Causes
decades of life Causes ... Infections 2. ... symptoms - Headache, fever ... , abdominal pain ... rheumatology #comparison #table