53 results
Faget's Sign & Liebermeister's Rule
Pulse-Temperature Dissociation
EVERY 1 F RISE IN TEMPERATURE -> HR INCREASES 8-10 BPM
INFECTIOUS
INCREASES 8-10 BPM INFECTIOUS ... Blockers • CNS Lesions ... CLINICAL UTILITY ... the most likely infection ... help hone your differential
Kerion
Raised, boggy lesion with heaped up purulent nodules 
Caused by host's response to a fungal ringworm
Raised, boggy lesion ... fungal ringworm infection ... mentagrophytes) Clinical ... Hair loss • Fever ... #Diagnosis #Management
Skin Conditions Associated with Joint Pain

Rash
	• Human parvovirus B19 infection

Malar rash
	• SLE
	• Human parvovirus B19 infection
	•
parvovirus B19 infection ... parvovirus B19 infection ... • Rheumatic fever ... Discoid skin lesions ... #skin #rashes #differential
Hodgkin's Lymphoma vs Non-Hodgkin's Lymphoma - Comparison

Hodgkin's Lymphoma:
 • Epidemiology: young adults 20-30, older 50-70
 •
Non-Hodgkin's Lymphoma - Comparison ... e.g., HIV), EBV infection ... - Pel-Ebstein fever ... Etiology: - Infections ... #hematology
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
Purpura - Differential ... hemorrhagic skin lesions ... SLE) - Viral infections ... APLS • Acute Infectious ... mountain spotted fever
Clinical Manifestations of Human Herpes Viruses (HHV)

Herpes simplex virus 1	HSV-1	Frequently subclinical (80-90%) Oral lesions (10-20%) congenital
Clinical Manifestations ... (80-90%) Oral lesions ... 20%) congenital infection ... virus 7 HHV-7 Fever ... Microbiology #Diagnosis #Comparison
Cerebral Toxoplasmosis 
- Most comrnon CNS infection in patients with AIDS 
who are not receiving appropriate
Most comrnon CNS infection ... prophylaxis Clinical ... Headache • Fever ... • Seizure Management ... pyrimethamine-induced hematologic
Petechial/Purpuric Rashes- THE ALGORITHMIC APPROACH 

These rashes can be especially challenging and are
associated with devastating differential
with devastating differential ... inflammation or infection ... petechiae/purpura with fever ... petechiae/purpura with fever ... #Diagnosis #Dermatology
Neurological Manifestations of Tuberculosis
Spinal Arachnoiditis & Polyradiculopathy:
 • Subacute onset of limb weakness, bladder/bowel dysfunction, muscle
neurologic symptoms, fever ... ) • Headache, fever ... Meningitis: • Fever ... Tuberculosis #diagnosis #differential ... #TB #neurology
Erythemas Summarized
Erythema ab igne
 • A dermatosis that results from repeated exposure to heat (fires, heating
known as rat bite fever ... or Haverhill fever ... infectiosum • Fever ... acute rheumatic fever ... #table #differential