39 results
Oroya Fever
Hematologic disease caused by Bartonella bacilliformis
Restricted to the Andes highlands of Peru & Ecuador
B. bacilliformis:
Oroya Fever Hematologic ... disease caused ... intracellular, Aerobic - Cocci ... Inflammation: high fever ... Peripheral smear - Cocci
Anaplasma Infection - Anaplasma phagocytophilum
Pathophysiology: 
 • Obligate, intracellular bacteria
 • Transmitted via blacklegged tick —
after bite • Fever ... is rare (< 10% cases ... ), cough (30% cases ... Infection #diagnosis #microbiology
Hantavirus
Pathogen: Hantavirus - Rodents are the primary reservoir
Transmission:
 • Shed in the urine, feces, saliva of
barns and lake houses ... • Prodrome: fever ... chills, myalgias, nausea ... management #treatment #microbiology
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
disorders, or other causes ... • Secondary Causes ... mountain spotted fever ... Differential #Diagnosis #hematology ... #rheumatology #
Guide to Interpretation of Positive Blood Cultures

I arrange the potential Gram stain results that one can
rods, Gram(–) cocci ... Gram(+) cocci are ... Fewer positive cultures ... shaped GPR, these clues ... Interpretation #Laboratory #Microbiology
Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
Causes of Knee Effusions ... Fever/Chills/Joint ... (8%) - Gm - cocci ... Acute rheumatic fever ... Knee #Effusions #causes
Doxycycline - Coverage and Indications
 • Staphylococci (S aureus + CoNS)
 • The tick stuff: Borrelia
• "Atypical" causes ... Bartonella, Q fever ... #pharmacology #microbiology
Causes of Pericardial Effusion - Differential Diagnosis
Infectious:
 • Viral: Enterovirus, Herpesvirus, Adenovirus, Parvovirus
 • Bacterial: Mycobacterium
Causes of Pericardial ... Non-Infectious: • Rheumatologic ... Mediterranean Fever ... Differential #Diagnosis #Causes
Microbial Etiology of Acute Pharyngitis - IDSA
Bacterial
 • Group A streptococcus - Pharyngotonsillitis, scarlet fever
 •
Pharyngotonsillitis, scarlet fever ... Pharyngoconjunctival fever ... #differential #causes ... #bacteria #microbiology
Cold Urticaria
Prevalence - 0.05% in the population
Disease onset - Mostly 2nd to 4th decades of life
Causes
decades of life Causes ... symptoms - Headache, fever ... , fatigue, Nausea ... Urticaria #diagnosis #rheumatology