67 results
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 ... Sarcoidosis or Lofgren's syndrome ... Psittacosis, Bartonella, Syphilis ... Differential #Diagnosis #Dermatology
Genital Skin Ulcers - Differential Diagnosis Algorithm
Painful:
 • Herpes simplex
 • Haemophilus ducreyi (chancroid)
 • Behcet's
Genital Skin Ulcers ... ) • Behcet's syndrome ... Painless: • Primary syphilis ... ulcerative #skinrash #dermatology ... Diagnosis #Algorithm #causes
Hyperthermia Syndromes Comparison
Serotonin Syndrome - NMS - Malignant Hyperthermia - Malignant Catatonia
Cause - Onset - Vitals
Comparison Serotonin ... Syndrome - NMS ... Malignant Catatonia Cause ... Mental Status - Treatment ... #Comparison #diagnosis
Skin Ulcers of the Lower Legs / Feet - Differential Diagnosis Algorithm
Physical:
• Pressure
• Trauma
• Radiation
Vascular:
• Arterial
Skin Ulcers of the ... Tabes dorsalis (syphilis ... ulcerative #skinrash #dermatology ... Diagnosis #Algorithm #causes
Secondary Syphilis Rash
Secondary syphilis is the most contagious of all the stages of this disease, and
Skin rash and malaise ... with or without treatment ... , but without treatment ... resembling rashes caused ... Clinical #Photo #Dermatology
Genital Lesions - Differential Diagnosis Algorithm
Elevated - Vesicles:
 • Herpes simplex
Elevated - Papules / Plaques -
• Secondary Syphilis ... ) • Reiter's syndrome ... ) • Behcet's syndrome ... #skinlesions #dermatology ... Diagnosis #Algorithm #causes
Skin Ulcers by Etiology - Differential Diagnosis Algorithm
Physical:
 • Trauma
 • Pressure
 • Radiation
Vascular:
 • Arterial
Skin Ulcers by Etiology ... Tabes dorsalis (syphilis ... Tuberculosis • Syphilis ... ulcerative #skinrash #dermatology ... Diagnosis #Algorithm #causes
The Stages of Syphilis 

Primary Syphilis 
- The chancre lesion is the hallmark of primary syphilis.
Without treatment ... soles in 50% of cases ... and nephrotic syndrome ... roots, causing a syndrome ... granuIomas on skin
Central Distribution, Febrile / Ill:
 - Viral Exanthem 
 - Lyme Disease (erythema migrans) 
Central Distribution,
Stevens-Johnson Syndrome ... meningococcaemia - Syphilis ... Algorithm #Diagnosis #Dermatology ... #Skin
Fever vs Hyperthermia
Fever:
 • Regulated in the hypothalamic thermoregulatory center
 • "Set point" raised by prostaglandin
Neuroleptic malignant syndrome ... ; Serotonin syndrome ... • Treatment: ... loss from the skin ... #Hyperthermia #comparison