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Full-length video Where can I learn more about second-intention healing after Mohs?
Can a Mohs wound heal without stitches?
Direct Answer
Yes, some Mohs wounds can heal well without stitches, a flap, or a skin graft. This is called second-intention healing. It is a deliberate reconstruction choice when the wound's location, depth, contour, nearby landmarks, blood supply, and the patient's priorities make natural filling and contraction useful rather than harmful.
Second intention is not unfinished care. It is also not right for every wound.
How does second-intention healing work?
What second-intention healing means
When a wound closes by second intention, the body builds new tissue from the bottom upward. The edges gradually move inward, and new surface skin grows across the wound.
Three processes are easy to picture:
- Filling: new tissue covers the wound bed.
- Contraction: the wound becomes smaller as its edges move inward.
- Resurfacing: new skin grows from the edges until the surface closes.
The scar then continues to change in color, firmness, and contour for months.
Why might a surgeon choose natural healing?
Why a surgeon may choose it
Second intention can avoid a flap, graft, donor site, or additional incision. It can preserve future options. In selected contours, natural contraction can help the final scar blend.
The choice should be purposeful. The surgeon should be able to explain why contraction is expected to help rather than pull on an eyelid, nostril, lip, ear rim, or another landmark.
How do contour and location affect the choice?
The concave-versus-convex rule is a tendency, not a law
Traditional teaching favors concave or shadowed areas and warns about convex surfaces. Studies of wound contraction and facial outcomes support the importance of contour and location.
But contour alone is not enough. Modern nasal data suggest that wound depth and size can be stronger predictors of outcome than a simple location label. Experienced surgeons may also use second intention in broader selected wounds.
The safer rule is:
What factors favor or limit second intention?
Factors that favor or limit second intention
| Factor | Why it matters |
|---|---|
| Concave or naturally shadowed contour | Contraction may blend into the surrounding shape |
| Shallow wound with a healthy bed | May fill and resurface more predictably |
| Distance from a free margin | Reduces risk of pulling an eyelid, nostril, or lip |
| Preserved structural support | Helps prevent collapse or notching |
| Patient accepts a visible healing period | The wound remains open while it fills and resurfaces |
| Deep wound or exposed critical structure | May require coverage, support, or another reconstructive plan |
| Convex surface or prominent contour | Contraction or depression may be more visible |
| Poor healing capacity or difficult wound-care circumstances | Can make prolonged open-wound management burdensome |
These are decision factors, not automatic yes-or-no rules.
Where is second intention commonly considered?
Where it is commonly considered
Second intention is often discussed for selected wounds of the nasal sidewall or crease, medial canthus, temple, ear concavity, scalp, forehead, and other sites where contour and wound characteristics are favorable.
It may deserve more caution near the nasal tip, nostril rim, eyelid margin, lip, prominent cheek, exposed support structures, or any site where contraction could alter function.
Even within one named area, two wounds can behave differently. A shallow sidewall wound and a deep wound approaching the nostril are not the same reconstruction.
What will the healing arc look like?
What the healing arc looks like
The first phase is an open wound. It then fills, becomes smaller, and develops new surface skin. The time varies with size, depth, location, circulation, health, and care. Selected facial cohorts commonly report surface closure over roughly three to six weeks, while dermatologic lower-leg cohorts report substantially longer healing times. Those are population patterns, not a promise for one wound. 4–6
The early appearance can be alarming when a patient expected an immediate closed line. That early view is not the final result. The wound and scar may continue changing for months after the surface closes.
This article does not provide a universal timeline because the published literature includes different sites, wound sizes, and follow-up methods. Your treating team should give an estimate for your exact wound.
What are the advantages and tradeoffs?
Advantages and tradeoffs
Potential advantages
- no flap or graft donor site;
- no additional incision line;
- fewer reconstructive steps;
- direct observation of the wound;
- preservation of future repair options;
- potentially excellent blending in selected contours.
Potential tradeoffs
- longer visible healing than a closed repair;
- repair-specific wound care until the surface closes;
- contraction that can distort a free margin;
- depressed, raised, widened, or differently colored scar;
- later refinement or reconstruction if healing is unfavorable.
How does it compare with stitches, flaps, or grafts?
How it compares with stitches, a flap, or a graft
| Choice | Main advantage | Main tradeoff |
|---|---|---|
| Second intention | Avoids additional incision and donor site | Visible open healing and less immediate control over contraction |
| Linear closure | Immediate closure with a planned line | Requires tissue movement and may lengthen the scar |
| Local flap | Uses nearby matched skin and can redirect tension | More incision lines and design complexity |
| Skin graft | Covers the wound without moving nearby skin | Donor site and possible color/contour mismatch |
No option is best for every wound. A reconstruction should be judged by the problem it solves.
What can the evidence tell us?
What the evidence can and cannot tell us
Regional studies show that wound contraction and cosmetic outcomes vary by location. In one head-and-neck cohort, concave and flatter regions received acceptable ratings more often than convex regions, but even the convex group had acceptable results in selected cases. Nasal and facial cohorts identify wound depth, size, and contour as important predictors. 1–3
Most evidence is observational. Wounds are not randomly assigned to natural healing, grafts, or flaps, because surgeons select the option they believe fits the defect. This makes patient-specific judgment essential.
Infection estimates also vary across facial, mixed-site, and lower-extremity studies. A single pooled number would be misleading without the site and population. 8
When might another repair be safer?
When another repair may be safer
A closure, flap, graft, structural support, or collaboration may be preferable when:
- contraction could pull an eyelid, nostril, lip, or other free margin;
- cartilage, tendon, nerve, bone, or another critical structure needs coverage or support;
- the wound is deep or broad enough that natural healing would create an unacceptable contour;
- the patient cannot manage a prolonged visible healing period;
- circulation, immune status, medications, or medical conditions make the plan less suitable;
- a faster closed repair better fits the patient's needs without creating distortion.
What wound-care instructions apply?
Wound-care boundary
Second-intention care is not one-size-fits-all. Dressing choice, cleansing, ointment, activity, and follow-up depend on wound location, depth, health, and the treating team's protocol.
Use the instructions provided for your wound. Contact the treating team when those instructions are unclear or when the wound is not following the expected course.
What should I ask my surgeon?
Questions to ask your surgeon
- Why is this wound a good candidate for second intention?
- What feature makes contraction helpful rather than risky?
- Is a free margin, cartilage, bone, tendon, or nerve at risk?
- What early appearance should I expect?
- What is the estimated time to surface closure for this specific wound?
- What alternatives were considered?
- What repair-specific instructions should I follow?
- When will you reassess the contour and scar?
Frequently asked questions about second intention
Frequently Asked Questions
Does second intention mean the surgeon could not repair the wound?
No. In selected wounds, it can be the preferred reconstruction even when flaps and grafts are available.
Is second intention always slower than stitches?
The surface generally remains open longer than a closed repair. Whether that tradeoff is worthwhile depends on contour, function, donor sites, and patient priorities.
Will I have an open wound?
Yes, temporarily. Follow the instructions from your treating team for that specific wound.
Is it only for small wounds?
No fixed size rule applies to every site. Size is one factor among depth, location, support, free margins, healing capacity, and patient preference.
Can it be used on the nose?
Yes, for selected nasal wounds. Precise subsite, depth, support, and risk of nostril or tip distortion matter.
Can the result be revised later?
Sometimes. Scar refinement or later reconstruction may be considered if contour, function, or appearance remains problematic after healing matures.
Where should I go next in the Patient Journey?
Next Steps in the Patient Journey
Ask your surgeon to explain why natural healing fits your wound, what contraction is expected to do, what alternative repairs were considered, and where to find your repair-specific instructions.
Continue with the question that fits you now
Who reviewed and authored this healing guide?
References for this second-intention guide
References
- Mott KJ, Clark DP, Stelljes LS. Regional Variation in Wound Contraction of Mohs Surgery Defects Allowed to Heal by Second Intention. Dermatol Surg. 2003;29(7):712-722.
- Kim DNW, Kibbi N, Christensen SR, Leffell DJ, Suozzi KC. Factors Affecting Outcomes of Second-Intent Healing of Nasal Defects After Mohs Micrographic Surgery. Arch Dermatol Res. 2023;315:67-73.
- van der Eerden PA, Lohuis PJFM, et al. Secondary Intention Healing After Excision of Nonmelanoma Skin Cancer of the Head and Neck. Plast Reconstr Surg. 2008.
- Kimura A, Ishii T, Hatta N. Efficacy and Cosmetics of Secondary Intention Healing for Facial Skin Cancer: A Single-Center Retrospective Study. J Dermatol. 2026;53(7):1006-1012.
- Pynn EV, Ransom M, Walker B, et al. Healing of Excisional Wounds on Lower Legs by Secondary Intention (HEALS) Cohort Study. Part 1: A Multicentre Prospective Observational Cohort Study in Patients Without Planned Compression. Clin Exp Dermatol. 2022;47(10):1829-1838. doi:10.1111/ced.15273.
- Willenbrink TJ, Brodland DG. Pinch Grafts Versus Second Intention Wound Healing for Mohs Micrographic Surgery Defects Below the Knee: A Prospective Randomized Trial. Dermatol Surg. 2024;50(11):1010-1016. doi:10.1097/DSS.0000000000004272.
- Pitchford CA, Hemmerich CE, Desrosiers AS, Tolkachjov SN. Patient Satisfaction With Second-Intention Healing in Mohs Micrographic Surgery: A Systematic Review. Dermatol Surg. 2026. doi:10.1097/DSS.0000000000005207.
- Schimmel J, Belcher M, Vieira C, et al. Incidence of Surgical Site Infections in Second Intention Healing After Dermatologic Surgery. Dermatol Surg. 2020;46(12):1492-1497.