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

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

Scarring - Irreversible-biopsy required
 - Infectious
- Differential Diagnosis ... - Secondary to Skin ... • Discoid lupus ... • Secondary syphilis ... #Algorithm #causes
Christmas Tree Rash of Pityriasis rosea
 - small oval scaling patches
 - Christmas tree pattern
 -
parallel to lines of skin ... - Differential diagnosis ... : secondary syphilis ... nummular eczema, tinea ... #dermatology #photo
Allopecia - Differential Diagnosis Framework for Hair Loss

Localized / Focal Hair Loss Pattern:
 • Scarring Alopecia:
Diagnosis Framework ... Folliculitis decalvans, Tinea ... Capitis - Skin ... Disease: Discoid lupus ... : Lupus erythematosus
Lupus (SLE): Mucocutaneous Manifestations

 • Langerhan cells and keratinocytes release cytokines -> localized inflammatory response ->
areas -> Scaring alopecia ... hair follicles -> causes ... inflammation on skin ... Malar (butterfly) Rash ... pathophysiology #diagnosis
Papulosquamous Skin Rash - Differential Diagnosis Algorithm
Erythrematous or violaceous papules & plaques with overlying scale
 •
Papulosquamous Skin ... Rash - Differential ... Herald's atch • Tinea ... • Secondary Syphilis ... #Algorithm #causes
Secondary Syphilis Rash
Secondary syphilis is the most contagious of all the stages of this disease, and
Rash Secondary ... Skin rash and malaise ... resembling rashes caused ... #Rash #Diagnosis ... #Clinical #Photo
Great Mimickers - SHALLOTS Mnemonic

S- Syphilis - Neurosyphilis, aortitis, gummas... Granulomas can form anywhere! Skin, mucosa,
Mnemonic S- Syphilis ... Skin, mucosa, joints ... ulcers, arthritis, alopecia ... Could be lupus in ... SHALLOTS #Mnemonic #Diagnosis
Drug Induced Lupus vs SLE
Drug Induced Lupus (DIL):
 • Epidemiology: -10% of all lupus cases, drug-dependent,
NPSLE rare, Malar rash ... Prognosis: Usually mild ... Discontinuation of causal ... Photosensitivity, Alopecia ... #rheumatology #diagnosis
The Stages of Syphilis 

Primary Syphilis 
- The chancre lesion is the hallmark of primary syphilis.
- Rash, pink ... soles in 50% of cases ... rashes, including tinea-mimicker ... granuIomas on skin ... Latent #Tertiary #Diagnosis