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Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
Chikungunya - Herpes virus ... differential #diagnosis #msk
Approach to Joint Pain - Arthritis Differential Diagnosis Framework

Inflammatory Versus Noninflammatory Pain
 • Is it inflammatory
burgdorferi • Virus ... • Hepatitis B virus ... Differential #Diagnosis #MSK
Encephalitis Differential Diagnosis by Location

 • White Matter: PML, ADEM
 • Limbic System: HSV1, HSV6, Treponema
Listeria, West Nile Virus ... Equine Encephalitis Virus ... , Powassan Virus ... , Powassan Virus ... , Nipah Virus, Acute
Clinical Manifestations of Human Herpes Viruses (HHV)

Herpes simplex virus 1	HSV-1	Frequently subclinical (80-90%) Oral lesions (10-20%) congenital
Herpes simplex virus ... Herpes simplex virus ... Varicella-zoster virus ... Epstein—Barr virus ... Human herpes virus
Causes of Myocarditis 
1. Infectious Myocarditis
 • Bacterial - Staphylococcus, Streptococcus, Pneumococcus, Meningococcus, Gonococcus, Salmonella, Corynebacterium
virus, rubella ... virus, hepatitis ... C virus, dengue ... virus, Junin virus ... , rabies virus,
Persistence of clinically relevant viruses on dry inanimate surfaces

Most common viruses persist on surfaces for days
viruses Type of Virus ... SARS associated virus ... Herpes simplex virus ... Polio virus Type ... Pseudorabies virus
Hepatitis Virus Screening Algorithm
 - Hepatitis A Virus Antibody, IgM
 - Hepatitis B Virus Core Antibody,
Hepatitis Virus ... - Hepatitis A Virus ... - Hepatitis B Virus ... - Hepatitis B Virus ... - Hepatitis C Virus
Varus Stress Test for LCL Injury on Knee Physical Exam

The knee is examined in extension and
Varus Stress Test ... PT_yuu_mizu628 #Varus ... video #sports #msk
IDSA - Prophylaxis to Prevent First Episode of Opportunistic Disease in HIV-AIDS
 • Pneumocystis pneumonia (PCP)
Influenza A and B virus ... Varicella-zoster virus ... • Hepatitis A virus ... • Hepatitis B virus
Bell's Palsy
Bell’s Palsy is a damage, acute weakness, or paralysis of the Facial nerve (7th CN),
Herpes simplex virus ... - Epstein-Barr virus ... Varicella-Zoster virus