14 results
Eczematous Skin Rash - Differential Diagnosis Algorithm
Eczematous - Pruritic/Scaly/Erythematous lesions. Usually poorly demarcated
 • Atopic Dermatitis
- Differential Diagnosis ... Well-demarcated erythema ... anyone - Allergic ... #Eczematous #SkinRash ... #causes
Interstitial Lung Diseases (ILD)
Exposure-Related ILD (a.k.a. extrinsic allergic alveolitis): 
 • Hypersensitivity pneumonitis, Farmer's lung, Bird
a.k.a. extrinsic allergic ... ILD caused by inhalation ... Polymyositis-dermatomyositis, Lupus ... Sarcoidosis • Vasculitis ... #diagnosis #differential
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
- Differential Diagnosis ... Pigmented Purpuric Dermatosis ... reactions • Erythema ... #Differential #Diagnosis ... #hematology #rheumatology
Erythemas Summarized
Erythema ab igne
 • A dermatosis that results from repeated exposure to heat (fires, heating
• A dermatosis ... of necrotizing vasculitis ... cancers, including lung ... #comparison #table ... #differential #diagnosis
Causes of Pseudocellulitis - Differential Diagnosis Framework for Cellulitis Mimics

Cellulitis: Deep skin and subcutaneous fat infection

Pseudo
antibiotics and avoid allergic ... Acute bursitis • Erythema ... stasis • Stasis dermatitis ... Inflammatory carcinoma - Lung ... #dermatology #skin
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
Lung Abscess - Diagnosis ... Abscess Pathophysiology ... of PCN allergy ... Blastomyces - Dermatitidis ... : • Vasculitis
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
three primary pathophysiologic ... causes differentiated ... Post-strep GN, Lupus ... involvement: Anti-GBM Disease ... #differential #diagnosis
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
- Differential Diagnosis ... tract, and often causes ... inflammation Others: • Lupus ... such as systemic lupus ... #rheumatology #
Sweet Syndrome

Acute febrile neutrophilic dermatosis (Sweets Syndrome) is a skin condition characterized by fever and inflamed
with systemic disease ... Causes: - Idiopathic ... , breast CA - Hematologic ... CANDLE syndrome - Allergic ... ’s syndrome - Lupus
Allopecia - Differential Diagnosis Framework for Hair Loss

Localized / Focal Hair Loss Pattern:
 • Scarring Alopecia:
- Differential Diagnosis ... Capitis - Skin Disease ... : Discoid lupus ... Scarring Alopecia: Lupus ... , erosions, or erythema