Secondary lesions of acne & Acne Grading

Secondary lesions of acne

1. Excoriations (picked or scratched spots)

2. Erythematous macules (red marks from recently healed spots, best seen in in fair skin)

3. Pigmented macules (dark marks from old spots, mostly affecting those with dark skin)

4. Scars of various types

Acne Grading

• Acne may be classified as mild, moderate or severe.
• Comedones and inflammatory lesions are usually considered separately.

1. Mild acne

• <20 comedones
• <15 inflammatory lesions
• Or, total lesion count <30

2. Moderate acne

• 20-100 comedones
• 15-50 inflammatory lesions
• Or, total lesion count 30-125

3. Severe acne

• →5 pseudocysts
• Total comedons count >100
• Total inflammatory count >50
• Nodules
• Scar
• Or, total lesion count >125