12 results
Allopecia - Differential Diagnosis Framework for Hair Loss

Localized / Focal Hair Loss Pattern:
 • Scarring Alopecia:
Focal Hair Loss Pattern ... Diffuse Hair Loss Pattern ... - Pattern: Androgenetic ... (male pattern hair ... loss), Female pattern
Hair Loss (Alopecia) - General (Diffuse and Focal) Differential Diagnosis Algorithm

DIFFUSE
Scarring - Irreversible-biopsy required
 • Lupus
Differential Diagnosis Algorithm ... DIFFUSE Scarring ... planopilaris Pattern ... Differential #Diagnosis #Algorithm ... #causes
Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
Nodular pattern ... nodules, notice sparing ... CTChest #Nodular #Pattern ... #Comparison #Table
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
Low Attenuation pattern ... woman of child-bearing ... LowAttenuation #Cystic #Pattern ... #Comparison #Table
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
Low Attenuation pattern ... woman of child-bearing ... LowAttenuation #Cystic #Pattern ... #Comparison #Table
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
with a nodular pattern ... nodules, notice sparing ... CTChest #Nodular #Pattern ... #Differential #Comparison ... #Table #RadiologyAssistant
Diffuse Hair Loss (Alopecia) - Differential Diagnosis Algorithm

Scarring - Irreversible-biopsy required
 • Lupus erythematosus
 • Lichen
Differential Diagnosis Algorithm ... Scarring - Irreversible-biopsy ... planopilaris Pattern ... Differential #Diagnosis #Algorithm ... #causes
Papulosquamous Skin Rash - Differential Diagnosis Algorithm
Erythrematous or violaceous papules & plaques with overlying scale
 •
Differential Diagnosis Algorithm ... , plaques with scaling ... Christmas tree pattern ... Differential #Diagnosis #Algorithm ... #causes
Nonscarring Alopecias: Clinical features of the most common types
Patterned hair loss:
 - Age: puberty or older
Nonscarring Alopecias ... the most common types ... Patterned hair ... in 5% of cases ... #types #differential
Reticular pattern 
1. Lymphangitic carcinomatosis: irregular septal thickening, usually focal or unilateral 50% adenopathy', known carcinoma.
2.
Reticular pattern ... thickening (crazy paving ... CTChest #Reticular #Pattern ... #Comparison #Table