13 results
Petechial/Purpuric Rashes- THE ALGORITHMIC APPROACH 

These rashes can be especially challenging and are
associated with devastating differential
Rashes- THE ALGORITHMIC ... ; however, an algorithmic ... purpura occurs in vasculitic ... as autoimmune vasculitis ... #Diagnosis #Dermatology
Causes of Erythema Nodosum - Mnemonic

NO cause found in 60% of cases
Drugs (antibiotics e.g., sulfonamides, amoxicillin)
Oral
Causes of Erythema ... Nodosum - Mnemonic ... Lofgren's syndrome Ulcerative ... Differential #Diagnosis #Dermatology ... #SkinRash
Algorithm for Diagnosis of the Petechial / Purpuric Rash

Febrile/Toxic, Palpable: 
 - Meningococcaemia, Disseminated Gonococcal Infection,
Algorithm for Diagnosis ... DIC, Thrombotic Thrombocytopaenic ... - Autoimmune Vasculitis ... Purpura #Rash #Algorithm ... #Diagnosis #Dermatology
Vasculitis Involving the Skin - Differential Diagnosis Framework

Primary: 50% Cutaneous Vasculitis: Leukocytoclastic Vasculitis
Secondary: CTD: SLE, RA
Small Vessel: Petechiae ... • Erythema elevatum ... polyarteritis nodosa ... Polyarteritis nodosa ... #skin #dermatology
Erythema Nodosum - Causes and Differential Diagnosis 
Appearance:  erythematous painful lumps usually 1-6 cm in
Erythema Nodosum ... thighs RARELY ulcerate ... #Nodosum #Causes ... Differential Diagnosis #Dermatology ... #SkinRash #Clinical
Reactive Skin Rash - Differential Diagnosis Algorithm
Reactive erythematous with various morphology
 • Urticaria - Firm /
Differential Diagnosis Algorithm ... lasts <24hrs • Erythema ... Nodosum - Tender ... #Reactive #SkinRash ... #dermatology #Differential
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Differential Diagnosis Algorithm ... hemostasis: - Thrombocytopenia ... Infection - Vasculitis ... - Autoimmune Vasculitis ... #Causes #dermatology
Vascular Skin Lesions - Differential Diagnosis Algorithm
 - Petechiae < 0.2 cm diameter
 - Purpura 0.2
Differential Diagnosis Algorithm ... - Petechiae < ... • Acquired - Vasculitis ... #Vascular #Vasculitis ... #SkinRash #dermatology
Skin Ulcers of the Lower Legs / Feet - Differential Diagnosis Algorithm
Physical:
• Pressure
• Trauma
• Radiation
Vascular:
• Arterial
Differential Diagnosis Algorithm ... insufficiency • Vasculitis ... #Feet #Ulcers #ulcerative ... #skinrash #dermatology ... Differential #Diagnosis #Algorithm
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
Dermatologic Manifestations ... Skin Findings: • Petechiae ... Bullae/Blisters • Ulceration ... sensation or pain: • Petechiae ... Polyarteritis nodosa