10 results
Causes of Erythema Nodosum - Mnemonic

NO cause found in 60% of cases
Drugs (antibiotics e.g., sulfonamides, amoxicillin)
Oral
Causes of Erythema ... Lofgren's syndrome Ulcerative ... #Causes #Differential ... #Diagnosis #Dermatology ... #SkinRash
Erythema Nodosum - Causes and Differential Diagnosis 
Appearance:  erythematous painful lumps usually 1-6 cm in
Erythema Nodosum ... - Causes and Differential ... thighs RARELY ulcerate ... #Nodosum #Causes ... #Dermatology #SkinRash
Vasculitis Involving the Skin - Differential Diagnosis Framework

Primary: 50% Cutaneous Vasculitis: Leukocytoclastic Vasculitis
Secondary: CTD: SLE, RA
- Differential ... vasculitis • Erythema ... polyarteritis nodosa ... #dermatology #rheumatology ... #differential #
Reactive Skin Rash - Differential Diagnosis Algorithm
Reactive erythematous with various morphology
 • Urticaria - Firm /
Reactive Skin Rash ... - Differential ... Nodosum - Tender ... #Reactive #SkinRash ... #dermatology #Differential
Skin Ulcers by Etiology - Differential Diagnosis Algorithm
Physical:
 • Trauma
 • Pressure
 • Radiation
Vascular:
 • Arterial
Skin Ulcers by Etiology ... - Differential ... Mycosis fungoides (cutaneous ... Cryptococcosis #Ulcers #ulcerative ... #skinrash #dermatology
Behçet's Syndrome
Systemic disease associated with inflammation of multiple organs, small-vessel vasculitis and large-vessel vasculopathy
Epidemiology:
 • Young
more): Genital ulceration ... vasculitis) • Cutaneous ... nodosum (septal ... like lesions, erythema ... Behcet disease) Differential
Erythemas Summarized
Erythema ab igne
 • A dermatosis that results from repeated exposure to heat (fires, heating
causes: infections (cutaneous ... • A chronic skin ... nodosum • Tender ... comparison #table #differential ... #diagnosis #dermatology
Oral Skin Ulcers - Differential Diagnosis Algorithm
Single Ulcer:
 • Traumatic ulcer
 • Angular ulcer
 • Aphthous
Oral Skin Ulcers ... stomatitis • Erythema ... Acute necrotizing ulcerative ... #Oral #mouth #SkinRash ... #dermatology #Differential
Allopecia - Differential Diagnosis Framework for Hair Loss

Localized / Focal Hair Loss Pattern:
 • Scarring Alopecia:
Allopecia - Differential ... Capitis - Skin ... trichorrhexis nodosa ... , erosions, or erythema ... #Diagnosis #dermatology
Pathergy Summary Overview

What is pathergy?
Pathergy is an exaggerated skin injury occurring after minor trauma such as
disorders • Erythema ... - Pustule - Ulceration ... Pathergy #diagnosis #differential ... allergy #immunology #dermatology ... #skin