11 results
Hair Loss (Alopecia) - General (Diffuse and Focal) Differential Diagnosis Algorithm

DIFFUSE
Scarring - Irreversible-biopsy required
 • Lupus
Differential Diagnosis Algorithm ... • Discoid lupus ... Congenital hair shaft ... #Diagnosis #Algorithm ... #causes
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Causes of Petechial ... Diagnosis Algorithm ... Infection - Vasculitis ... (lupus, RA, Sjogren's ... #Causes #dermatology
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
GPA causes disease ... Rarely dominate the clinical ... Maculopapular rash ... #rash #diagnosis ... #rheumatology
Systemic Lupus Erythematosus (SLE) - Diagnosis and Management Summary
 • Epidemiology: 10-180/100,000, Typically Age 20-40, F:M
40, F:M 9:1 • Clinical ... Manifestations: Malar rash ... Photosensitivity, Alopecia ... Positive in 60-80% of cases ... Management #Summary #rheumatology
Focal / Localized Hair Loss (Alopecia) - Differential Diagnosis Algorithm

Scarring - Irreversible-biopsy required
 - Infectious
Differential Diagnosis Algorithm ... • Discoid lupus ... Congenital hair shaft ... Focal #Localized #dermatology ... #causes
Clinical Features of Systemic Lupus (SLE)
General: Fever (50%), Depression, Fatigue (75%), Weight loss (50%)
Eye: Sjögrens (15%)
Skin
Clinical Features ... of Systemic Lupus ... Photosensitivity, Butterfly rash ... , Vasculitis, Purpura ... Thrombocytopenia #Lupus
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
pathophysiologic causes ... Post-strep GN, Lupus ... Henoch-SchonIein Purpura ... Glomerulonephritis #Vasculitis ... differential #diagnosis #algorithm
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
) Suspect: Clinical ... and permanent alopecia ... Malignancy (e.g. hematologic ... • Nonscarring alopecia ... vein thrombosis Hematologic
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
tract, and often causes ... inflammation Others: • Lupus ... mucositis - Rash ... such as systemic lupus ... differential #diagnosis #rheumatology
Drug Induced Lupus vs SLE
Drug Induced Lupus (DIL):
 • Epidemiology: -10% of all lupus cases, drug-dependent,
to 1:1 F:M • Clinical ... NPSLE rare, Malar rash ... Discontinuation of causal ... 40, F:M 9:1 • Clinical ... Photosensitivity, Alopecia