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

DIFFUSE
Scarring - Irreversible-biopsy required
 • Lupus
Hair Loss (Alopecia ... erythematosus • Lichen ... • Androgenetic alopecia ... facial hair) • Alopecia ... erythematosus • Lichen
Allopecia - Differential Diagnosis Framework for Hair Loss

Localized / Focal Hair Loss Pattern:
 • Scarring Alopecia:
follicularis (KFSD), Lichen ... erythematosus, Lichen ... • Non-Scarring Alopecia ... : Androgenetic alopecia ... totalis, Alopecia
Focal / Localized Hair Loss (Alopecia) - Differential Diagnosis Algorithm

Scarring - Irreversible-biopsy required
 - Infectious
Localized Hair Loss (Alopecia ... erythematosus • Lichen ... Brocq • Alopecia ... • Traction alopecia ... Absent • Alopecia
Diffuse Hair Loss (Alopecia) - Differential Diagnosis Algorithm

Scarring - Irreversible-biopsy required
 • Lupus erythematosus
 • Lichen
Diffuse Hair Loss (Alopecia ... erythematosus • Lichen ... • Androgenetic alopecia ... Discrete Patches • Alopecia ... facial hair) • Alopecia
Genital Lesions - Differential Diagnosis Algorithm
Elevated - Vesicles:
 • Herpes simplex
Elevated - Papules / Plaques -
Inflammatory: • Lichen ... Scabies • Pubic lice ... Pemphigus vulgaris • Lichen ... Sclerosis • Erosive Lichen
Pruritus - Primary Skin Lesion - Differential Diagnosis Algorithm
Macules / Papules / Plaques:
 • Xerosis (dry
Psoriasis • Lichen ... Infestations (scabies, lice
Genital Skin Ulcers - Differential Diagnosis Algorithm
Painful:
 • Herpes simplex
 • Haemophilus ducreyi (chancroid)
 • Behcet's
Pemphigus vulgaris • Lichen ... sclerosis • Erosive lichen
Lichen planus: predilection sites

#Lichen #Planus #Predilection #Sites
#Locations #Dermatology #Diagnosis
Lichen planus: predilection ... sites #Lichen
Lichen Simplex Chronicus: Thickened, red, puritic patch of skin resulting from chronic rubbing 
and scratching.

Charlie Goldberg,
Lichen Simplex Chronicus ... Dermatology #SkinRash #Lichen
Secondary Disseminated Syphilis

Case from my residency that @EstradaElJefe helped me publish in JGIM. One important finding
is the patchy alopecia ... Photo #SkinRash #Alopecia