12 results
Petechial/Purpuric Rashes- THE ALGORITHMIC APPROACH 

These rashes can be especially challenging and are
associated with devastating differential
Petechial/Purpuric ... Nonpalpable purpura ... rash, the diagnosis ... #Diagnosis #Dermatology ... #Purpuric #Rash
Pigmented Purpuric Dermatoses (PPD) - Capillaritis

Group of chronic, benign, cutaneous eruptions characterized by the presence of
Pigmented Purpuric ... of petechiae, purpura ... - This iron causes ... brown tint of the rash ... #diagnosis #dermatology
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
Petechiae, Palpable purpura ... Petechiae • Palpable purpura ... Vesicles overlying purpuric ... Henoch-Schönlein purpura ... Polyangiitis #GPA #dermatology
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Rash - Differential ... • Extremes of age ... Henoch Schonlein Purpura ... : - Purpura fulminans ... #dermatology #physicalexam
DRESS Syndrome vs SJS/TEN
DRESS
 • Latency: 2-8 weeks
 • Rash: Morbilliform
 • Mucosal involvement: 50% have
: 2-8 weeks • Rash ... : 4-28 days • Rash ... erythematous macules with purpuric ... TEN #comparison #table ... #dermatology
Vesiculobullous Rashes - THE ALGORITHMIC APPROACH 
Vesiculobullous rashes provoke significant angst
in many physicians (Figure 5, page
However, the differential ... vesiculobullous rash ... and a fever may have ... gonococcal disease, purpura ... #Diagnosis #Dermatology
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Vasculitis: • Purpura ... scleritis • Palpable purpura ... Henoch Schonlein Purpura ... skin) • Palpable purpura ... macules, palpable purpura
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
Vasculitis: • Purpura ... Henoch Schonlein Purpura ... erythematous nodules, purpura ... scleritis • Palpable purpura ... causing palpable purpura
Erythemas Summarized
Erythema ab igne
 • A dermatosis that results from repeated exposure to heat (fires, heating
• Many have moved ... that appear to have ... Erythemas #comparison #table ... #differential # ... diagnosis #dermatology
Acute Generalized Exanthematous Pustulosis (AGEP)

AGEP is largely a clinical diagnosis based on classical skin findings in
Causes? ... is caused by medications ... Facial edema - Purpura ... patients unlikely to have ... Exanthematous #Pustulosis #Dermatology