9 results
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Rash - Differential ... : • Palpable Rash ... • Non-Palpable Rash ... : • Palpable Rash ... • Non-Palpable Rash
Anaplasma Infection - Anaplasma phagocytophilum
Pathophysiology: 
 • Obligate, intracellular bacteria
 • Transmitted via blacklegged tick —
shaking chills • Rash ... is rare (< 10% cases ... ), cough (30% cases ... Infection #diagnosis #microbiology
Microbial Etiology of Acute Pharyngitis - IDSA
Bacterial
 • Group A streptococcus - Pharyngotonsillitis, scarlet fever
 •
Scarlatiniform rash ... #differential #causes ... #bacteria #microbiology
Secondary Syphilis - Rash on Palms and Soles 
41ys, seen in our ED b/c of 20
Secondary Syphilis - Rash ... present in 80% of cases ... Secondary #Syphilis #Rash ... #dermatology #physicalexam
Miliaria Crystallina on Skin Physical Examination

A 55-year-old man who had been admitted to the intensive care
sudden-onset vesicular rash ... mild form of heat rash ... mildest form of heat rash ... This is caused by ... Crystallina #Skin #PhysicalExam
Orbital Apex Syndrome secondary to Herpes Zoster Ophthalmicus (HZO)

This 81 yo male was referred to our
improvement in the rash ... other potential causes ... the condition, case ... steroids (some cases ... ophthalmology #physicalexam
Erythema Ab Igne on Physical Exam

Erythema ab igne (EAI) is a skin reaction caused by chronic
skin reaction caused ... #Igne #AbIgne #PhysicalExam ... #dermatology #rash
Capnocytophaga
GNR with long fusiform shape.  Fastidious facultative anaerobe that grows slowly and needs enriched agar
C.
= most common cause ... shock with fever, rash ... Diagnosis #Cats #Dogs #Microbiology
Summary of Monkeypox: Current Knowledge as of May 2022
 • What is Monkeypox?
 • Origins of
smallpox) - Rash ... similar; monkeypox rash ... - Case-fatality ... infectiousdiseases #microbiology