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Topical Ointments for Different Types of Injuries & Skin Conditions

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1. Cuts, Lacerations & Abrasions

Triple Antibiotic Ointment (Neosporin)

• Contains: Neomycin + Bacitracin + Polymyxin B
• Use: Minor cuts, abrasions, sutured lacerations
• How it works: Broad-spectrum coverage — Bacitracin targets gram-positives (Staph, Strep); Polymyxin B targets gram-negatives; Neomycin adds additional gram-negative coverage
• ⚠️ Key caution: Neomycin causes contact dermatitis in ~1% of single-use cases, but rises significantly with repeated use. If you see redness + itching appearing days after application, think neomycin contact dermatitis, not infection.

Bacitracin Ointment (Plain)

• Use: Preferred over triple antibiotic by many clinicians for minor wounds and post-procedure skin care
• Advantage: No neomycin = no contact dermatitis risk. Equivalent efficacy to Neosporin for most superficial wounds
• Also available as: Polysporin = Bacitracin + Polymyxin B (neomycin-free)

Mupirocin (Bactroban) 2%

• Use: Superior activity against Staphylococcus aureus and Streptococcus species — preferred when MRSA or impetigo is suspected
• Advantage: Effective as oral antibiotics for impetigo
• Limitation: More expensive than triple antibiotic ointment; not significantly better than triple antibiotic for preventing infection in clean surgical wounds

Petrolatum (Vaseline) / Plain Emollient

• Use: Sutured wounds or post-dermatologic procedure wounds
• Role: Prevents dressing adherence, maintains moist wound environment, reduces crust formation — without antibiotic exposure risk
• Some dermatology texts actually prefer this over antibiotic ointments post-cutaneous surgery to avoid sensitization

Roberts and Hedges' Clinical Procedures in Emergency Medicine — Ointments section: "One obvious benefit of using topical antibiotics is that ointments prevent adherence of the wound surface to the dressing."

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2. Burns

First-Degree Burns (Superficial — e.g., sunburn)

• Usually no topical antimicrobial needed
• Plain emollient or aloe vera cream is sufficient and soothing
• High-potency corticosteroids have no benefit on healing or scarring in burns

Second-Degree / Partial-Thickness Burns

Third-Degree / Full-Thickness Burns (hospital-based)

Roberts and Hedges': "Many burn specialists prefer plain bacitracin ointment as the topical of choice because of its cost, equal efficacy, and good patient acceptance."

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3. Infected Skin / Superficial Bacterial Infections

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4. Fungal Skin Infections (Tinea, Candidiasis)

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5. Inflammatory Skin Conditions (Dermatitis, Eczema)

Topical Corticosteroids — Classified by Potency

Non-Steroidal Topicals (Calcineurin Inhibitors)

• Tacrolimus (Protopic) 0.03%/0.1% — Atopic dermatitis, especially for sensitive areas like eyelids/face
• Pimecrolimus (Elidel) 1% — Mild-to-moderate atopic dermatitis

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Quick Reference Summary Table

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Key Practical Points for Interns

1. Bacitracin > Neosporin for most minor wounds — equivalent efficacy, no sensitization risk
2. Silver sulfadiazine is the classic burn cream, but trend is shifting toward plain bacitracin for minor burns
3. Stop silver sulfadiazine when re-epithelialization begins — it can impede healing
4. Mupirocin is your go-to when you suspect S. aureus or MRSA skin infection
5. Match corticosteroid potency to body site — never use high-potency steroids on the face
6. Mafenide acetate is reserved for deep burns — remember it can cause metabolic acidosis
7. Ointments are generally preferred over creams in dry/cracked wounds; creams are better for moist/intertriginous areas

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