20 results
Dermatological semiology of Cutaneous Vasculitis 

Clinicopathologic correlations
 • Purpura, papules, pustules, necrosis: involvement of small vessels
#dermpath #dermatology ... #semiology #signs ... #lesions #diagnosis ... manifestations #pathology ... #lesions #differential
Maculopapular - Diagnostic Algorithm
Pathophysiology:
- Catch-all term with a wide range of potential pathophysiologic mechanisms and causative
Maculopapular - Diagnostic ... or fluid-filled lesions ... Ill-appearing, vital sign ... New-onset fever with rash ... #Dermatology #Rash
Christmas Tree Rash of Pityriasis rosea
 - small oval scaling patches
 - Christmas tree pattern
 -
Christmas Tree Rash ... - long axis of lesion ... - Differential diagnosis ... rosea #clinical #dermatology ... #photo #PhysicalExam
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
- Differential Diagnosis ... reddish-purple lesions ... Infection - Vasculitis ... Algorithm #Causes #dermatology ... #physicalexam
Maculopapular Rashes - THE ALGORITHMIC APPROACH 

The term maculopapule is a portmanteau, a combination
of macule and
distribution of the rash ... differential diagnosis ... rashes but without signs ... broader differential diagnosis ... #Diagnosis #Dermatology
Clinical Features of Systemic Lupus (SLE)
General: Fever (50%), Depression, Fatigue (75%), Weight loss (50%)
Eye: Sjögrens (15%)
Skin
Photosensitivity, Butterfly rash ... , Vasculitis, Purpura ... Cranial nerve lesions ... erythematosus #signs ... #symptoms #diagnosis
Secondary Syphilis Rash
Secondary syphilis is the most contagious of all the stages of this disease, and
Secondary Syphilis Rash ... The signs and symptoms ... heaped, wart-like lesions—Condyloma ... #Diagnosis #Clinical ... #Photo #Dermatology
Lymphocutaneous Sporotrichiosis Infection

Landscaper w/ painless nodular rash of arm present for months wax and wane; diagnosis?
Lymphocutaneous
painless nodular rash ... wax and wane; diagnosis ... painless, no systemic signs ... papulonodular lesions ... Infection #clinical #photo
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
- Differential Diagnosis ... ischemic skin lesions ... mucositis - Rash ... Ocular inflammatory lesions-interstitial ... purpura: strong sign
Lupus (SLE): Mucocutaneous Manifestations

 • Langerhan cells and keratinocytes release cytokines -> localized inflammatory response ->
scaly annular lesions ... Malar (butterfly) Rash ... Livedo Reticularis, Vasculitis ... pathophysiology #diagnosis ... #signs #symptoms