11 results
Hair Loss (Alopecia) - General (Diffuse and Focal) Differential Diagnosis Algorithm

DIFFUSE
Scarring - Irreversible-biopsy required
 • Lupus
) Differential Diagnosis ... - Secondary to Skin ... #HairLoss #Alopecia ... #dermatology #Differential ... #causes
Focal / Localized Hair Loss (Alopecia) - Differential Diagnosis Algorithm

Scarring - Irreversible-biopsy required
 - Infectious
- Secondary to Skin ... Secondary syphilis #HairLoss ... #Alopecia #Focal ... #Localized #dermatology ... #Algorithm #causes
Allopecia - Differential Diagnosis Framework for Hair Loss

Localized / Focal Hair Loss Pattern:
 • Scarring Alopecia:
Diagnosis Framework ... Localized / Focal ... Capitis - Skin ... , pustules, crusts ... #dermatology #Hairloss
Christmas Tree Rash of Pityriasis rosea
 - small oval scaling patches
 - Christmas tree pattern
 -
- small oval scaling ... parallel to lines of skin ... - Differential diagnosis ... nummular eczema, tinea ... #photo #PhysicalExam
Papulosquamous Skin Rash - Differential Diagnosis Algorithm
Erythrematous or violaceous papules & plaques with overlying scale
 •
Papulosquamous Skin ... Rash - Differential ... Herald's atch • Tinea ... Papulosquamous #SkinRash ... #causes
Lupus (SLE): Mucocutaneous Manifestations

 • Langerhan cells and keratinocytes release cytokines -> localized inflammatory response ->
alopecia • Red ... hair follicles -> causes ... cells -> Incr local ... inflammation on skin ... pathophysiology #diagnosis
Pustular Skin Rash - Differential Diagnosis Algorithm
Pruritic / Scaly / Erythematous lesions, usually poorly demarcated
Acneiform -
Pustular Skin Rash ... distribution, sparing ... #Pustular #SkinRash ... #dermatology #Differential ... #causes
Eczematous Skin Rash - Differential Diagnosis Algorithm
Eczematous - Pruritic/Scaly/Erythematous lesions. Usually poorly demarcated
 • Atopic Dermatitis
Eczematous Skin ... Rash - Differential ... vesicles, erosions scaling ... #Eczematous #SkinRash ... #causes
Moccasin-variety Tinea Pedis 
70 M chronic scaly feet. Over the years: rash has itched only occasionally;
Over the years: rash ... Diagnosis? ... dermatophytes cause ... skin of inflamed ... #foot #dermatology
Common Dermatological Conditions - Distribution and Morphology
 • Acne vulgaris - Face, upper back, chest -
honey-colored crusts ... with site, (e.g„ tinea ... ; pruritis #dermatology ... #rash #differential ... #diagnosis #skin