Criteria

Alopecia severity

Mild: AA is patchy and limited to 5% to 25% of scalp surface area.

Moderate: more than 25% to 50% scalp surface area affected.

Severe:

  • Extensive - more than 50% scalp surface area affected

  • Alopecia totalis - whole scalp involved

  • Alopecia universalis - whole body including beard and body hair involved.

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