37 results
Petechiae: punctate spots that arise from spontaneous bleeding secondary to profound thrombocytopenia. 
The spots (easily visible
Petechiae: punctate spots ... The spots (easily ... non-blanching and non-tender ... Images #Clinical #Photo ... #Dermatology #Rash
Secondary Syphilis Rash
Secondary syphilis is the most contagious of all the stages of this disease, and
reddish brown spots ... occur on other parts ... #Rash #Diagnosis ... #Clinical #Photo ... #Dermatology
Genital Skin Ulcers - Differential Diagnosis Algorithm
Painful:
 • Herpes simplex
 • Haemophilus ducreyi (chancroid)
 • Behcet's
- Differential Diagnosis ... ) • Behcet's syndrome ... Painless: • Primary syphilis ... ulcerative #skinrash #dermatology ... #Differential #Diagnosis
Fever and Rash - Differential Diagnosis Framework
 • Viral: Measles, Infectious Mono (EBV, CMV), Acute HIV,
- Differential Diagnosis ... meningitis, Secondary syphilis ... , DRESS, Sweet syndrome ... #Differential #Diagnosis ... #dermatology
Christmas Tree Rash of Pityriasis rosea
 - small oval scaling patches
 - Christmas tree pattern
 -
- Differential diagnosis ... : secondary syphilis ... rosea #clinical #dermatology ... #photo #PhysicalExam
Genital Lesions - Differential Diagnosis Algorithm
Elevated - Vesicles:
 • Herpes simplex
Elevated - Papules / Plaques -
- Differential Diagnosis ... • Secondary Syphilis ... ) • Reiter's syndrome ... ) • Behcet's syndrome ... #skinlesions #dermatology
Causes of Erythema Nodosum - Mnemonic

NO cause found in 60% of cases
Drugs (antibiotics e.g., sulfonamides, amoxicillin)
Oral
Sarcoidosis or Lofgren's syndrome ... Psittacosis, Bartonella, Syphilis ... #Differential #Diagnosis ... #Dermatology #SkinRash
Staphylococcal Scalded Skin Syndrome (SSSS)

A 5-year-old girl presents to the ED with a rash that started
Staphylococcal Scalded Skin Syndrome ... patient’s rash is tender ... Scalded #Skin #Syndrome ... SSSS #Clinical #Photo ... Peds #Pediatrics #Dermatology
Primary Syphilis
Usually, a single ulcer (chancre) appears at the site where the bacteria entered the body.
Primary Syphilis ... obvious, i.e. inter-vaginally ... develop at the spot ... #Chancres #Diagnosis ... #Clinical #Photo
Central Distribution, Febrile / Ill:
 - Viral Exanthem 
 - Lyme Disease (erythema migrans) 
Central Distribution,
Stevens-Johnson Syndrome ... meningococcaemia - Syphilis ... Rash #Algorithm #Diagnosis ... #Dermatology #Skin