Diffuse Hair Loss (Alopecia) - Differential Diagnosis Algorithm
Scarring - Irreversible-biopsy required
• Lupus erythematosus
• Lichen planopilaris
Pattern
• Androgenetic alopecia
Anagen Effluvium
• Chemotherapy
• Loose anagen syndrome
Discrete Patches
• Alopecia totalis (all scalp and facial hair)
• Alopecia universalis (all body hair)
Telogen Effluvium
- Endocrine
• Hypothyroidism
• Hyperthyroidism
• Hypopituitarism
• Post-partum
- Dietary
• Iron deficiency
• Zinc deficiency
• Copper deficiency
• Vitamin A Excess
- Drugs
• Oral contraceptives
• Hyperthyroid drugs
• Anticoagulants
• Lithium
- Stress Related
• Post-infectious
• Post-operative
• Psychological stress
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