22 results
Erythema Annulare Centrifugum (EAC),
This is erythema annulare centrifugum (EAC), one of the “figurate erythemas.” These lesions
Centrifugum (EAC ... annulare centrifugum (EAC ... Most cases are idiopathic ... clinical #photo #dermatology ... #skinrash
Causes of Erythema Nodosum - Mnemonic

NO cause found in 60% of cases
Drugs (antibiotics e.g., sulfonamides, amoxicillin)
Oral
Causes of Erythema ... Mnemonic NO cause ... Giardiasis #Erythema ... Differential #Diagnosis #Dermatology ... #SkinRash
Reactive Skin Rash - Differential Diagnosis Algorithm
Reactive erythematous with various morphology
 • Urticaria - Firm /
Differential Diagnosis Algorithm ... lasts <24hrs • Erythema ... #Reactive #SkinRash ... #dermatology #Differential ... #causes
Erythema Nodosum - Causes and Differential Diagnosis 
Appearance:  erythematous painful lumps usually 1-6 cm in
Erythema Nodosum ... - Causes and Differential ... #Nodosum #Causes ... Differential Diagnosis #Dermatology ... #SkinRash #Clinical
Erythemas Summarized
Erythema ab igne
 • A dermatosis that results from repeated exposure to heat (fires, heating
potential inciting causes ... foods, stress, etc ... Haverhill fever caused ... • Cause is unknown ... differential #diagnosis #dermatology
Genital Skin Ulcers - Differential Diagnosis Algorithm
Painful:
 • Herpes simplex
 • Haemophilus ducreyi (chancroid)
 • Behcet's
Differential Diagnosis Algorithm ... Ulcers #ulcerative #skinrash ... #dermatology #Differential ... #Diagnosis #Algorithm ... #causes
Trunk / Sacral Skin Ulcers - Differential Diagnosis Algorithm
Neoplastic
 • Squamous cell carcinoma
 • Basal cell
Differential Diagnosis Algorithm ... Trunk #Sacral #SkinRash ... #dermatology #Differential ... #Diagnosis #Algorithm ... #causes
Head and Neck Skin Ulcers - Differential Diagnosis Algorithm
Neoplastic:
 • Squamous cell carcinoma
 • Basal cell
Differential Diagnosis Algorithm ... Ulcers #ulcerative #skinrash ... #dermatology #Differential ... #Diagnosis #Algorithm ... #causes
Mucous Membrane Disorder - Differential Diagnosis Algorithm
Erosions/Ulcers/Blisters
 - Primary Dermatologic Diseases
     •
Differential Diagnosis Algorithm ... Blisters - Primary Dermatologic ... pemphigoid • Erythema ... MucousMembranes #dermatology ... #causes
Vascular Skin Lesions - Differential Diagnosis Algorithm
 - Petechiae < 0.2 cm diameter
 - Purpura 0.2
Differential Diagnosis Algorithm ... Vascular #Vasculitis #SkinRash ... #dermatology #Differential ... #Diagnosis #Algorithm ... #causes