37 results
Erythema Annulare Centrifugum (EAC),
This is erythema annulare centrifugum (EAC), one of the “figurate erythemas.” These lesions
Erythema Annulare ... EAC), This is erythema ... the “figurate erythemas ... drugs, systemic disease ... #dermatology #skinrash
Skin Conditions Associated with Joint Pain

Rash
	• Human parvovirus B19 infection

Malar rash
	• SLE
	• Human parvovirus B19 infection
	•
infection • Lyme disease ... migrans • Lyme disease ... Erythema marginatum ... Hypersensitivity vasculitis ... Antiphospholipid-antibody syndrome • Vasculitis
Vasculitis Involving the Skin - Differential Diagnosis Framework

Primary: 50% Cutaneous Vasculitis: Leukocytoclastic Vasculitis
Secondary: CTD: SLE, RA
Vasculitis Involving ... 50% Cutaneous Vasculitis ... Leukocytoclastic Vasculitis ... • Erythema elevatum ... : • Behcet Disease
Erythemas Summarized
Erythema ab igne
 • A dermatosis that results from repeated exposure to heat (fires, heating
Erythema ab igne ... early localized disease ... of necrotizing vasculitis ... called "Bazin's disease ... so-called fifth disease
Pyoderma Gangrenosum: Autoimmune disorder resulting in a vasculitis which causes slowly progressive 
ulceration of the skin.
resulting in a vasculitis ... number of systemic diseases ... inflammatory bowel disease ... suffers from Crohn's Disease ... #Dermatology #SkinRash
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
- Bone marrow disease ... deficiency • Liver disease ... Von Willebrand disease ... Dermatosis: Schamberg Disease ... reactions • Erythema
Fever and Rash - Differential Diagnosis Framework
 • Viral: Measles, Infectious Mono (EBV, CMV), Acute HIV,
gonorrhea, Rickettsial diseases ... Noninfectious: SJS/TEN, Erythema ... Sweet syndrome, Vasculitis
Pulmonary Renal Syndrome

Definition: Diffuse alveolar hemorrhage + Glomerulonephritis
Presentation (Pulmonary and renal manifestations can occur weeks apart):
ANCA-positive vasculitis ... ANCA-negative vasculitis ... IgA-associated vasculitis ... , Behcet disease ... differential #diagnosis #nephrology
Behçet's Syndrome
Systemic disease associated with inflammation of multiple organs, small-vessel vasculitis and large-vessel vasculopathy
Epidemiology:
 • Young
, small-vessel vasculitis ... panuveitis, retinal vasculitis ... acneiform lesions, erythema ... like lesions, erythema ... MCC-small vessel vasculitis
Behcet's Syndrome - Diagnosis
Diagnostic Criteria for Behget's Syndrome (International Study Group for Behget's Disease):
 • Recurrent,
Group for Behget's Disease ... ulcers - Ocular disease ... Uveitis or retinal vasculitis ... pseudofolliculitis, erythema ... uveitis, retinal vasculitis