11 results
Erythema Nodosum: In this case, E. Nodosum has occured secondary to 
Streptococcal infection.
Photo credit, Josh Fierer,
Erythema Nodosum ... Photo credit, Josh ... #Dermatology #SkinRash ... #Erythema #ENodosum ... #Photo #UCSDH
Erythema Nodosum - Causes and Differential Diagnosis 
Appearance:  erythematous painful lumps usually 1-6 cm in
Erythema Nodosum ... - Causes and Differential ... healing process) #Erythema ... #Differential Diagnosis ... #Dermatology #SkinRash
Causes of Erythema Nodosum - Mnemonic

NO cause found in 60% of cases
Drugs (antibiotics e.g., sulfonamides, amoxicillin)
Oral
Causes of Erythema ... Nodosum - Mnemonic ... Giardiasis #Erythema ... #Causes #Differential ... #Dermatology #SkinRash
Reactive Skin Rash - Differential Diagnosis Algorithm
Reactive erythematous with various morphology
 • Urticaria - Firm /
Reactive Skin Rash - Differential ... lasts <24hrs • Erythema ... Nodosum - Tender ... nodules on shins • Erythema ... #Reactive #SkinRash
Causes of Erythema Nodosum
Common
 - Idiopathic (up to 55 percent)
 - Infections: streptococcal pharyngitis (28 to
Causes of Erythema ... Nodosum Common ... Miscellaneous: lymphoma ... malignancies #Erythema ... #Differential #
Skin Conditions Associated with Joint Pain

Rash
	• Human parvovirus B19 infection

Malar rash
	• SLE
	• Human parvovirus B19 infection
	•
Dermatomyositis Erythema ... Lyme disease Erythema ... nodosum • Sarcoidosis ... #skin #rashes #differential ... #diagnosis #rheumatology
Hodgkin's Lymphoma Overview

Hodgkin's lymphoma (HL) is an uncommon hematological malignancy arising from mature B cells. It
Hodgkin's Lymphoma ... • Pruritis • Erythema ... nodosum • Immune ... Immunohistochemical studies (to differentiate ... classification #hematology
Causes of Pseudocellulitis - Differential Diagnosis Framework for Cellulitis Mimics

Cellulitis: Deep skin and subcutaneous fat infection

Pseudo
Pseudocellulitis - Differential ... Acute bursitis • Erythema ... • Erythema migrans ... Pseudocellulitis: • Lymphoma ... Pseudocellulitis #Differential
Behçet's Syndrome
Systemic disease associated with inflammation of multiple organs, small-vessel vasculitis and large-vessel vasculopathy
Epidemiology:
 • Young
nodosum (septal ... like lesions, erythema ... Behcet disease) Differential ... Ischemia, Leukemia, Lymphoma ... signs #symptoms #rheumatology
Erythroderma: Marked inflammation and scaling which can result from a variety of medical conditions.
In this case,
associated with T cell lymphoma ... The erythema is ... #Dermatology #SkinRash ... MycosisFungoides #Photo