13 results
Christmas Tree Rash of Pityriasis rosea
 - small oval scaling patches
 - Christmas tree pattern
 -
Christmas Tree Rash ... parallel to lines of skin ... Differential diagnosis: secondary ... nummular eczema, tinea ... #dermatology #photo
Algorithm for Diagnosis of the Petechial / Purpuric Rash

Febrile/Toxic, Palpable: 
 - Meningococcaemia, Disseminated Gonococcal Infection,
Algorithm for Diagnosis ... Petechial / Purpuric Rash ... Disseminated Gonococcal Infection ... Endocarditis, Henoch-SchönIein ... #Dermatology #Skin
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Differential Diagnosis Algorithm ... in primary or secondary ... - Trauma - Infection ... RMSF - Henoch Schonlein ... cryoglobulins • Skin
Secondary Syphilis Rash
Secondary syphilis is the most contagious of all the stages of this disease, and
Rash Secondary ... Skin rash and malaise ... treatment, the infection ... ▪ “Rash” (75% ... #Clinical #Photo
Hair Loss (Alopecia) - General (Diffuse and Focal) Differential Diagnosis Algorithm

DIFFUSE
Scarring - Irreversible-biopsy required
 • Lupus
Differential Diagnosis Algorithm ... • Tinea capitis ... decalvans - Secondary ... to Skin Disease ... Shafts • Tinea
Acute Purpura Fulminans Skin Rash on Physical Exam 
60 year old male ITP s/p splenectomy 
1d
Purpura Fulminans Skin ... purpura fulminans secondary ... - BIDMC Infectious ... Purpura #Fulminans #Skin ... #photo
Moccasin-variety Tinea Pedis 
70 M chronic scaly feet. Over the years: rash has itched only occasionally;
Moccasin-variety Tinea ... Over the years: rash ... skin of inflamed ... Indiana University Infectious ... type #clinical #photo
Papulosquamous Skin Rash - Differential Diagnosis Algorithm
Erythrematous or violaceous papules & plaques with overlying scale
 •
Papulosquamous Skin ... Rash - Differential ... Diagnosis Algorithm ... Herald's atch • Tinea ... central clearing • Secondary
Joint Disorders - Differential Diagnosis Algorithm
Monoarthritis
 • Septic
 • Crystalline
     - Gout
Differential Diagnosis Algorithm ... within 1 month of infection ... arthritis - with the skin ... inflammation is secondary ... like “butterfly rash
Petechial/Purpuric Rashes- THE ALGORITHMIC APPROACH 

These rashes can be especially challenging and are
associated with devastating differential
vasculitic diseases secondary ... inflammation or infection ... RMSF, and Henoch-Schönlein ... petechial or purpuric rash ... Purpural #Purpuric #Rash