📊 Acne Severity Grading (IGA Scale) Simulator

Grade 0 — Clear Skin Baseline

Reference baseline with no acne lesions present.

• 0: IGA grade (Clear)
• 0: Lesion count (baseline)
• None: Inflammation (placeholder)
• None: Treatment (maintenance only)

Defining the clear skin anchor point

Placeholder: grade 0 anchors the IGA scale for comparison.

Grade 1-2 — Mild, Comedonal Predominant

Mostly comedones with a few scattered papules.

• 1-2: IGA grade (Mild)
• Comedones: Predominant lesion (placeholder)
• Few: Papule count (placeholder)
• Topical: Treatment (retinoid/BPO)

Comedonal predominance at low grades

Placeholder: comedones dominate the lesion mix at grades 1-2.

Grade 3 — Moderate Papulopustular

Numerous inflammatory papules and pustules appear.

• 3: IGA grade (Moderate)
• Papules/pustules: Predominant lesion (placeholder)
• Widespread: Distribution (placeholder)
• Combo + oral abx: Treatment (placeholder)

Papulopustular escalation

Placeholder: inflammatory lesion count rises sharply at grade 3.

Grade 4 — Severe Nodulocystic

Numerous nodules and cysts with deep inflammation.

• 4: IGA grade (Severe)
• Nodules/cysts: Predominant lesion (placeholder)
• High: Scarring risk (placeholder)
• Isotretinoin: Treatment (placeholder)

Nodulocystic severe disease

Placeholder: deep painful nodules dominate at grade 4.

Treatment Intensity by IGA Grade

Therapy intensity scales directly with IGA grade.

• Topical: Grade 0-1 (placeholder)
• Combo/oral abx: Grade 2-3 (placeholder)
• Isotretinoin: Grade 4 (placeholder)
• ~12 wks: Reassessment (placeholder)

Stepwise treatment ladder

Placeholder: treatment tier is chosen to match IGA severity grade.

Placeholder: higher IGA grade generally means more aggressive systemic therapy.