52 results
Travel History - Clues to Infectious Disease Diagnosis in a Traveler 
 • Where did you
Clues to Infectious ... Disease Diagnosis ... → Leptospirosis ... Schistosomiasis • Skin ... Hepatitis A/B/C, syphilis
Fever in Returning Travelers from Tropical Regions - Frequent Differential Diagnoses
Medical History:
 • Skin exposure to
Frequent Differential Diagnoses ... infection Cardinal Symptoms ... localizing signs or symptoms ... without genital lesions ... #differential #diagnosis
CNS Ring-Enhancing Lesions - Immunocompromised vs Immunocompetent
Multiple Ring-Enhancing Lesions:
 • Toxoplasmosis (CD4 < 100)
 • Other
Chorioretinitis • Diagnosis ... - Compatible syndrome ... , may also see skin ... Tuberculosis • Syphilis ... #causes #radiology
Ulcerative Blastomycosis Skin Lesion
57 asymptomatic M from Indiana nonpruritic, painless, progressive skin lesion lower back x
Blastomycosis Skin ... Denies any travel ... Diagnosis? ... Blastomycosis #SkinRash #dermatology ... #clinical #photo
Genital Skin Ulcers - Differential Diagnosis Algorithm
Painful:
 • Herpes simplex
 • Haemophilus ducreyi (chancroid)
 • Behcet's
Genital Skin Ulcers ... - Differential Diagnosis ... ) • Behcet's syndrome ... Painless: • Primary syphilis ... #Algorithm #causes
Christmas Tree Rash of Pityriasis rosea
 - small oval scaling patches
 - Christmas tree pattern
 -
- long axis of lesion ... parallel to lines of skin ... - Differential diagnosis ... : secondary syphilis ... #photo #PhysicalExam
Pruritus - Generalized Differential Diagnosis Algorithm - Systemic and Primary Causes
== Primary Skin Lesions ==
Macules /
Generalized Differential Diagnosis ... Systemic and Primary Causes ... Lesions == Macules ... Lesion / Systemic ... Myelodisplastic syndrome
Central Distribution, Febrile / Ill:
 - Viral Exanthem 
 - Lyme Disease (erythema migrans) 
Central Distribution,
/ Ill, Target Lesions ... Stevens-Johnson Syndrome ... meningococcaemia - Syphilis ... Rash #Algorithm #Diagnosis ... #Dermatology #Skin
The Stages of Syphilis 

Primary Syphilis 
- The chancre lesion is the hallmark of primary syphilis.
soles in 50% of cases ... and nephrotic syndrome ... exposure to or symptoms ... granuIomas on skin ... Latent #Tertiary #Diagnosis
Genital Lesions - Differential Diagnosis Algorithm
Elevated - Vesicles:
 • Herpes simplex
Elevated - Papules / Plaques -
Genital Lesions ... - Differential Diagnosis ... • Secondary Syphilis ... ) • Reiter's syndrome ... #Algorithm #causes