4 results
Allopecia - Differential Diagnosis Framework for Hair Loss

Localized / Focal Hair Loss Pattern:
 • Scarring Alopecia:
cellulitis of the scalp ... Folliculitis decalvans, Tinea ... Shafts: Tinea Capitis ... Consider HIV) • Contact ... Hair #loss #alopecia
Hair Loss (Alopecia) - General (Diffuse and Focal) Differential Diagnosis Algorithm

DIFFUSE
Scarring - Irreversible-biopsy required
 • Lupus
Hair Loss (Alopecia ... ) - General (Diffuse ... totalis (all scalp ... Shafts • Tinea ... Shafts Intact or
Common Dermatological Conditions - Distribution and Morphology
 • Acne vulgaris - Face, upper back, chest -
Common Dermatological ... vesicles • Allergic contact ... Folliculitis - Any hair-bearing ... simplex - Lips, genitalia ... • Tinea versicolor
Nonscarring Alopecias: Clinical features of the most common types
Patterned hair loss:
 - Age: puberty or older
features of the most common ... thyroid imbalance, general ... in 5% of cases Tinea ... or abrupt - Contact ... frontoparietal scalps