15 results
Generalized Hyperpigmentation Differentials
Use the Mnemonic "no skin SPARED"

Images from dermnet.nz and merckmanuals

Mnemonic from https://www.medscape.com/slideshow/dermatology-mnemonics-6011359#5 #diagnosis #differential
Hyperpigmentation Differentials ... #5 #diagnosis #differential ... #symptoms #signs ... #dermatology #skin ... #skinrash
Vascular Skin Lesions - Differential Diagnosis Algorithm
 - Petechiae < 0.2 cm diameter
 - Purpura 0.2
Skin Lesions - Differential ... • Acquired - Vasculitis ... #Vascular #Vasculitis ... #SkinRash #dermatology ... #Differential #
Skin Ulcers of the Lower Legs / Feet - Differential Diagnosis Algorithm
Physical:
• Pressure
• Trauma
• Radiation
Vascular:
• Arterial
Legs / Feet - Differential ... insufficiency • Vasculitis ... Ulcers #ulcerative #skinrash ... #dermatology #Differential
Dermatological semiology of Cutaneous Vasculitis 

Clinicopathologic correlations
 • Purpura, papules, pustules, necrosis: involvement of small vessels
semiology of Cutaneous Vasculitis ... • Drug-induced vasculitis ... #dermpath #dermatology ... #semiology #signs ... pathology #lesions #differential
Skin Ulcers by Etiology - Differential Diagnosis Algorithm
Physical:
 • Trauma
 • Pressure
 • Radiation
Vascular:
 • Arterial
by Etiology - Differential ... insufficiency • Vasculitis ... Ulcers #ulcerative #skinrash ... #dermatology #Differential
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
- Differential ... ear disease Differential ... purpura: strong sign ... retinopathy Lab Tests ... differential #diagnosis
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Petechial Rash - Differential ... Infection - Vasculitis ... - Autoimmune Vasculitis ... Fecal occult blood test ... Algorithm #Causes #dermatology
Papulosquamous Skin Rash - Differential Diagnosis Algorithm
Erythrematous or violaceous papules & plaques with overlying scale
 •
Papulosquamous Skin Rash - Differential ... Auspitz sign, Koebner's ... Papulosquamous #SkinRash ... #dermatology #Differential
Behçet's Syndrome
Systemic disease associated with inflammation of multiple organs, small-vessel vasculitis and large-vessel vasculopathy
Epidemiology:
 • Young
, small-vessel vasculitis ... Positive pathergy test ... is a skin prick test ... Behcet disease) Differential ... diagnosis #management #signs
Allopecia - Differential Diagnosis Framework for Hair Loss

Localized / Focal Hair Loss Pattern:
 • Scarring Alopecia:
Allopecia - Differential ... Examination: • Signs ... disease • Pull test ... Initial Laboratory Tests ... #Diagnosis #dermatology