46 results
Erythema Nodosum - Causes and Differential Diagnosis 
Appearance:  erythematous painful lumps usually 1-6 cm in
Erythema Nodosum ... - Causes and Differential ... #Erythema #Nodosum ... 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
Generalized Hyperpigmentation Differentials
Use the Mnemonic "no skin SPARED"

Images from dermnet.nz and merckmanuals

Mnemonic from https://www.medscape.com/slideshow/dermatology-mnemonics-6011359#5 #diagnosis #differential
Hyperpigmentation Differentials ... #5 #diagnosis #differential ... #symptoms #signs ... #dermatology #skin ... #skinrash
Reactive Skin Rash - Differential Diagnosis Algorithm
Reactive erythematous with various morphology
 • Urticaria - Firm /
Reactive Skin Rash - Differential ... 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 ... Sarcoidosis • Crohn's disease ... #skin #rashes #differential
Demyelinating Diseases - Differential Diagnosis
 • Inflammatory: MS, ADEM, NMO, Paraneoplastic, Sjogren's, Polyarteritis nodosa, SLE
 •
Demyelinating Diseases ... - Differential ... Polyarteritis nodosa ... #Differential # ... Diagnosis #causes #neurology
Vasculitis Involving the Skin - Differential Diagnosis Framework

Primary: 50% Cutaneous Vasculitis: Leukocytoclastic Vasculitis
Secondary: CTD: SLE, RA
Involving the Skin - Differential ... polyarteritis nodosa ... Polyarteritis nodosa ... Vasculitis: • Behcet Disease ... differential #diagnosis
Common Hand Fractures on X-Ray
Mallet finger - injury to the lateral extensor slips
Boutonniere deformity - injury
Terry thomas sign ... Triquetral fracture ... Kienboch disease ... Radiology #Wrist #differential
Aortitis - Differential Diagnosis Framework
Non-Infectious Aortitis:
 • Vasculitides: Giant Cell Arteritis (GCA), Takayasu's arteritis, Cogan's Syndrome,
Aortitis - Differential ... Polyarteritis Nodosa ... : IgG4-Related Disease ... swinndong #Aortitis #Differential ... #Diagnosis #rheumatology
Portal Hypertension - Differential Diagnosis
Portal Pressure = the pressure difference between the pressure in the portal
Hypertension - Differential ... significant portal HTN Signs ... obstruction) • Lack of signs ... • Infiltrative diseases ... Veno-occlusive disease