Paronychia is a bacterial infection of the skin bordering the nail — a common but underestimated condition. Ignored or undertreated, it can become chronic, erode into the underlying bone, or spread into the flexor tendon sheath. Most cases are drained in the clinic the same day under local anesthesia. The key is not waiting longer than 3 days.
Nearly all paronychia cases are drained in the clinic under local anesthesia — a quick, well-tolerated procedure that provides rapid relief. OR is reserved for bone involvement or complex cases.
Understanding the Infection
Paronychia is a bacterial infection of the perionychium — the soft tissue that surrounds and borders the nail plate on its sides (lateral nail folds) and at its base (proximal nail fold). It is one of the most common hand infections, and also one of the most commonly undertreated.
Bacteria enter through any disruption in the skin around the nail. Hangnails, nail biting, aggressive cuticle manipulation, and repetitive wet work are classic causes. Nail salon procedures are a particularly significant contributor — cuticle cutting, pushing back the cuticle, gel nail application, and acrylic nail procedures all create microbreaks in the skin that provide entry points for bacteria, most commonly Staphylococcus aureus.
Once established, the infection produces localized redness, swelling, and tenderness along the nail border. As pus accumulates, the nail fold becomes fluctuant — a visible or palpable collection of pus under the skin, sometimes pointing spontaneously at the corner of the nail. Pain is present and worsens as pressure builds.
In Dr. Graham's experience, paronychia that is caught early — before a true abscess forms — may respond to a formal course of oral antibiotics with close follow-up. But most patients present after an abscess has already developed, at which point drainage is required and antibiotics alone will not resolve it. The most important principle is timing: do not let a nail infection go more than 3 days without evaluation. The longer it sits, the higher the risk of chronicity, bone involvement, or deeper spread.
The lateral nail folds (red) are the most common site of paronychia — bacteria enter through a break in this skin and pus accumulates in the space between the nail plate and the surrounding soft tissue. The proximal nail fold (green) can also be involved, particularly in post-salon infections where the cuticle has been cut or pushed back.
The nail matrix lies beneath the proximal nail fold. Infections that extend under the nail plate or beneath the proximal fold may require partial or complete nail removal to achieve adequate drainage.
Jacksonville Beach has no shortage of nail salons — and paronychia after manicures, gel nails, and acrylic nail procedures is more common than most patients expect. Cuticle cutting and pushing back the cuticle remove or disrupt the protective seal between the nail plate and the proximal nail fold. Gel and acrylic application involves filing and chemical exposure that can compromise the surrounding skin. Any of these creates an entry point for bacteria.
What makes salon-related paronychia particularly important to treat promptly is the tendency to progress — these infections often need formal incision and drainage before they become entrenched as chronic paronychia. A chronic paronychia is a smoldering, persistent nail fold infection that is significantly harder to resolve than an acute one treated early. In Dr. Graham's experience, a patient who presents within the first few days of a nail salon–related paronychia and receives proper drainage plus a full course of antibiotics does dramatically better than one who waits two weeks hoping it will resolve on its own.
The rule is simple: if your nail looks infected after a salon visit — redness, swelling, pus at the nail border — do not assume it will clear up with over-the-counter antibiotic ointment alone. Get it evaluated. The sooner it is drained and treated, the simpler the management and the lower the risk of complications.
Two Presentations
The distinction between acute and chronic paronychia matters — they have different causative organisms and require different management.
Treatment
Nearly all paronychia cases that require drainage are treated in Dr. Graham's clinic under local anesthesia. The procedure is quick, well-tolerated, and provides immediate relief once the pressure is released. It is not a procedure that requires operating room resources for most presentations.
Local anesthesia is administered — typically a digital block at the base of the finger, or a local infiltration around the nail fold depending on the location of the abscess. Once the area is anesthetized, one or two small incisions are made at the corner of the nail fold where the pus is most accessible, guided by where the fluctuance is pointing. The incision approach is individualized — the infection dictates the incision, not a standard template.
A formal course of oral antibiotics is always given alongside drainage — not as a substitute, but as an essential adjunct. Antibiotics alone cannot drain an abscess, but they address the surrounding cellulitis, reduce the risk of recurrence, and treat any bacteremia that may have developed. The culture from the drainage guides antibiotic selection.
In rare cases where the abscess has tracked under the nail plate and cannot be adequately drained through the nail fold incisions alone, partial or complete nail plate removal is required to access the abscess cavity and achieve full drainage. This is uncommon but necessary when the nail is involved.
Complex cases — suspected osteomyelitis, severe immunocompromise, or infections that have spread beyond the nail fold — are managed in the OR where more extensive evaluation and debridement can be performed safely.
Digital nerve block or local infiltration around the nail fold. The finger is anesthetized — the patient feels pressure but no pain during drainage.
The nail fold is examined for location and extent of fluctuance — where the pus is pointing determines where the incision goes. One or two incisions at the nail fold corner are most common, but the infection dictates the approach.
Small incision placed at the corner of the nail fold over the point of maximal fluctuance. Pus expressed, cavity irrigated. If the abscess tracks under the nail plate, partial or complete nail removal may be required for full drainage.
Purulent material sent for culture and sensitivity. Wound dressed — left open or lightly packed. Culture guides antibiotic selection and duration.
A formal course of oral antibiotics is prescribed alongside drainage — not optional, not brief. Antibiotics address surrounding cellulitis and reduce recurrence risk. Adjusted to culture results at follow-up.
Surgical Approach
There is no single template incision for paronychia. The location and extent of the abscess determines where Dr. Graham makes the cut.
Paronychia is not simply a cosmetic nuisance. An infection at the nail fold sits directly over the distal phalanx — and in patients whose immune response is impaired, bacteria can erode through the periosteum into the underlying bone, causing osteomyelitis. This is significantly harder to treat than the original nail fold infection, requiring prolonged antibiotics and sometimes surgical debridement of infected bone.
In Dr. Graham's experience, osteomyelitis following paronychia is most likely to develop in patients who are diabetic, on immunosuppressive medications, have peripheral vascular disease, are HIV-positive, or are receiving chemotherapy. These patients should not be triaged as routine outpatient cases. They require prompt drainage, careful antibiotic selection, and closer follow-up than a healthy adult with the same infection.
Signs that osteomyelitis may be developing:
Cases where osteomyelitis is a genuine possibility are managed in the OR — not in the clinic — where bone biopsy for culture can be performed alongside debridement, and where the case can be properly staged.
A paronychia caught on day one or two — before an abscess has fully formed — may respond to antibiotics alone. A paronychia ignored for a week becomes an established abscess that requires drainage, risks chronic paronychia, and in vulnerable patients risks bone involvement. Early treatment is simple. Chronic paronychia is not. The three-day window is not an estimate. It is a rule.
"I had a nail infection after getting my nails done and thought it would go away on its own. Two weeks later it was worse. Dr. Graham drained it in the office — took maybe 20 minutes — and within a week it was completely healed. I wish I hadn't waited so long."
Common Questions
What patients ask most often — many of them after waiting too long hoping it would resolve on its own.