21 results
Erythema Nodosum - Causes and Differential Diagnosis 
Appearance:  erythematous painful lumps usually 1-6 cm in
Erythema Nodosum ... - Causes and Differential ... Diagnosis Appearance ... Diagnosis #Dermatology ... #SkinRash #Clinical
Causes of Erythema Nodosum - Mnemonic

NO cause found in 60% of cases
Drugs (antibiotics e.g., sulfonamides, amoxicillin)
Oral
Causes of Erythema Nodosum ... #Erythema #Nodosum ... Mnemonic #Causes #Differential ... #Diagnosis #Dermatology ... #SkinRash
Reactive Skin Rash - Differential Diagnosis Algorithm
Reactive erythematous with various morphology
 • Urticaria - Firm /
Reactive Skin Rash - Differential ... Diagnosis Algorithm ... 24hrs • Erythema Nodosum ... #Reactive #SkinRash ... #dermatology #Differential
Skin Conditions Associated with Joint Pain

Rash
	• Human parvovirus B19 infection

Malar rash
	• SLE
	• Human parvovirus B19 infection
	•
infection • Lyme disease ... migrans • Lyme disease ... fasciitis Erythema nodosum ... #skin #rashes #differential ... #diagnosis #rheumatology
Vasculitis Involving the Skin - Differential Diagnosis Framework

Primary: 50% Cutaneous Vasculitis: Leukocytoclastic Vasculitis
Secondary: CTD: SLE, RA
Involving the Skin - Differential ... Diagnosis Framework ... polyarteritis nodosa ... Vasculitis: • Behcet Disease ... differential #diagnosis
Causes of Pseudocellulitis - Differential Diagnosis Framework for Cellulitis Mimics

Cellulitis: Deep skin and subcutaneous fat infection

Pseudo
Pseudocellulitis - Differential ... bursitis • Erythema nodosum ... Polyarthritis nodosum ... thrombophlebitis • Hematoma ... Pseudocellulitis #Differential
Aortitis - Differential Diagnosis Framework
Non-Infectious Aortitis:
 • Vasculitides: Giant Cell Arteritis (GCA), Takayasu's arteritis, Cogan's Syndrome,
Aortitis - Differential ... Diagnosis Framework ... Polyarteritis Nodosa ... swinndong #Aortitis #Differential ... #Diagnosis #rheumatology
Causes of Bone/Joint Pain in Sickle Cell Disease
Vaso-occlusive pain:
 • Mechanism: ischemic pain
 • Can present
in Sickle Cell Disease ... predispose to other orthopedic ... #differential # ... diagnosis #causes ... #hematology
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
reticularis Differential ... Diagnosis: Vasculitis ... Polyarteritis nodosa ... #rash #diagnosis ... #rheumatology
Ulcerative Blastomycosis Skin Lesion
57 asymptomatic M from Indiana nonpruritic, painless, progressive skin lesion lower back x
Diagnosis? ... heaped up borders); differential ... University Infectious Diseases ... Blastomycosis #SkinRash ... #dermatology #clinical