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First-Degree vs. Second-Degree Burns: Key Differences in Depth, Symptoms & Healing

Burn depth determines management, healing time, and scarring risk. The critical distinction is dermal involvement.

Comparison

Superficial vs. Deep Partial-Thickness

Superficial (2nd deg superficial): Upper dermis (papillary). Pink, moist, blanchable, very painful, heals 10–14 d, minimal scar.
Deep (2nd deg deep): Reticular dermis. White/mottled, non-blanching, less painful (nerve destruction), heals 3–6+ wks, high scar/contracture risk. Often needs excision/grafting.

Management Implications

First-degree: Cool compresses, aloe/moisturizer, NSAIDs, sun protection. Outpatient.
Superficial 2nd: Outpatient dressing (hydrocolloid), analgesia, follow-up 2–3 days.
Deep 2nd: Often requires burn center referral — tangential excision + autografting for optimal functional/cosmetic result.

Assessment Tip

Depth is often underestimated initially. Re-evaluate at 24–72 hrs (demarcation). When uncertain, treat as deeper and refer.

Burns - Related Articles

Feature	First-Degree (Superficial)	Second-Degree (Partial-Thickness)
Depth	Epidermis only	Epidermis + variable dermis
Appearance	Dry, erythematous, no blisters	Moist, blistered (bullae), weeping, red/white mottled
Capillary refill	Brisk (<3 sec)	Present (superficial) to sluggish/absent (deep)
Sensation	Painful, hypersensitive	Painful (superficial) → less painful (deep, nerve damage)
Blanching	Yes	Yes (superficial) → No (deep)
Healing time	3–7 days (desquamation)	Superficial: 10–14 days; Deep: 3–6+ weeks
Scarring	None	Superficial: minimal; Deep: likely (hypertrophic/keloid)
Common causes	Sunburn, brief scald, flash flame	Scalds, flame, contact, chemical, electrical