A fingernail growing sideways can often be corrected at home if caught early, but the right fix depends on why the nail deviated in the first place. A nail that curves into the skin fold, angles off to one side, or grows with a noticeable lateral tilt usually traces back to an injury, chronic pressure, or a problem with the nail matrix itself. Some cases respond well to taping and careful trimming over a few weeks; others eventually need professional treatment to realign the growth or prevent the nail from digging into surrounding tissue.
Why a Fingernail Starts Growing Sideways
Nails grow from a structure called the matrix, a pocket of tissue tucked under the base of the nail near the cuticle. When the matrix is healthy and symmetrical, the nail plate slides forward in a straight line. But when something disrupts the matrix or the nail bed beneath it, the new nail can angle off-center, curl to one side, or grow with an uneven edge that digs into the skin.
The most common cause is trauma. Slamming a finger in a door, dropping something heavy on it, or even chronic low-grade pressure from gripping tools can damage the nail bed or matrix enough to redirect growth. Poorly managed nail bed injuries are a well-recognized source of lasting nail deformities, and restoring normal growth after significant damage sometimes requires surgical reconstruction.1PubMed Central. Nail bed injuries and deformities of nail Even a single bad injury can permanently change the angle if the matrix heals with scar tissue on one side.
Habitual nail biting or aggressive cuticle trimming is another culprit. Tearing the nail below the free edge or picking at the corners weakens the nail plate unevenly, and the regrowth can curve toward the damaged side. Tight-fitting gloves, repetitive friction from certain manual work, and fungal infections that thicken or warp the nail plate are also common triggers. Less frequently, a bony growth beneath the nail called a subungual exostosis can push the nail sideways. This benign but painful bump arises from the fingertip bone and physically distorts the overlying nail, often leading to misdiagnosis until imaging reveals the lump underneath.2PubMed Central. Subungual exostosis of the finger with nail plate induction
In rarer cases, the nail matrix itself is rotated or misaligned from birth. This condition, called congenital malalignment, is characterized by lateral deviation of the nail plate along its long axis because the matrix sits at an angle relative to the fingertip bone.3PubMed Central. Acquired Congenital Malalignment of the Great Toenails It is most studied in toenails, where it is considered underdiagnosed, but the same mechanism can affect fingers.4PubMed Central. Congenital Malalignment of the Great Toenails: A Review If a fingernail has always grown slightly crooked for as long as you can remember, malalignment is worth considering.
What You Can Do at Home
If the nail is only mildly curved or angled and the skin around it is not red, swollen, or infected, home care can sometimes coax it back into a more normal growth path. The goal is to relieve pressure on the side where the nail is digging in and to guide the new growth straight as it emerges from the matrix.
Start by soaking the finger in warm water for ten to fifteen minutes to soften the nail and surrounding skin. After soaking, gently lift any part of the nail edge that is pressing into the skin fold. A small piece of clean cotton or dental floss tucked under the corner of the nail can create a buffer between the nail edge and the tissue. Replace the cotton daily after soaking, and keep the area clean and dry between sessions.
Taping is the most studied non-surgical method. The basic idea is to use adhesive tape to pull the skin fold away from the nail edge, reducing pressure and giving the nail room to grow forward instead of into the tissue. In one long-term study of over 500 patients, a taping technique resolved symptoms and corrected abnormal nail growth in roughly half the patients, with no additional treatment needed.5PubMed Central. Patient-controlled taping for the treatment of ingrown toenails That study focused on toenails, but the mechanical principle is the same for fingers: pull the irritated skin away from the nail edge so the nail can grow past the point of conflict.
To tape effectively, cut a strip of medical tape about half an inch wide and several inches long. Anchor one end on the skin beside the affected nail edge, pull it firmly away from the nail to retract the skin fold, and wrap the tail around the finger to hold the tension. Replace the tape daily, or whenever it loosens. The process is painless but takes patience. Because fingernails grow at roughly three millimeters per month on average, you may need several weeks of consistent taping before the offending nail edge clears the tissue.6PubMed Central. Nails in older adults
While the nail is healing, trim it straight across rather than rounding the corners. Rounded or very short nails are more likely to grow into the skin fold on the next cycle. Avoid picking at the nail or cutting it too aggressively, and protect the finger from further trauma with a bandage or finger cot if you work with your hands.
When Home Care Is Not Enough
A few red flags should prompt you to see a doctor rather than continuing to manage things yourself. If the skin around the nail is red, warm, swollen, or oozing pus, an infection may already be underway. Infected nail folds can worsen quickly, especially in people with diabetes or compromised circulation. Similarly, if the nail has been growing sideways for months without improvement despite consistent home care, the underlying cause is likely structural rather than something taping alone will fix.
Persistent pain under the nail that worsens with pressure is another reason to get evaluated. A bony growth beneath the nail, like the subungual exostosis mentioned earlier, will not resolve on its own and typically requires surgical removal of the bony bump before normal nail growth can resume.2PubMed Central. Subungual exostosis of the finger with nail plate induction And if the nail seems to be growing backward into the cuticle area rather than sideways into the skin fold, you may be dealing with retronychia, a condition where the nail plate embeds into the tissue at the base of the nail. Retronychia usually follows trauma and tends to cause persistent swelling around the cuticle. Removing the old nail plate is both diagnostic and curative, though it can recur.7PubMed Central. Retronychia
Professional Conservative Treatments
When home taping is not enough but surgery seems premature, a doctor or podiatrist may recommend a nail brace. These are small corrective devices, often made of thin metal wire or composite material, that are bonded across the surface of the nail. The brace applies a gentle, sustained force that flattens the curvature and redirects growth over time, similar to how orthodontic braces straighten teeth.
Nail bracing is particularly appealing because it avoids anesthesia, requires no recovery period, causes minimal disruption to daily activities, and offers immediate relief from the pressure pain of an ingrown or misdirected nail edge.8PubMed Central. Ingrown toenails (unguis incarnatus): Nail braces/bracing treatment Most bracing literature focuses on toenails, where the problem is especially common, but the same devices and principles apply to fingernails when the curvature is the primary issue. The main downside is that recurrence is possible once the brace is removed, in which case reapplication is usually straightforward.
Surgical Options for Stubborn Cases
If a nail keeps growing sideways despite conservative approaches, surgery can address the problem more permanently. The most common procedure for a nail that repeatedly digs into the skin fold is partial nail avulsion: a doctor numbs the finger, removes the offending strip of nail along the problematic edge, and may then destroy the corresponding sliver of the matrix so that portion of the nail never regrows.
Matrix destruction is the key step for preventing recurrence. One widely used technique involves applying a chemical called phenol to the exposed matrix tissue after the nail strip is removed. In a comparative study, patients who had partial nail removal combined with phenol treatment of the matrix had no recurrence over six months, while those who had partial nail removal alone saw a recurrence rate of about one in five.9Scientific Research Journal of Medical Sciences. A Comparative Study of Partial Nail Avulsion with Phenol Matricectomy 50% Versus Partial Nail Avulsion Alone Regarding Complications and Recurrence Rate The trade-off is a slightly narrower nail afterward, since the destroyed matrix section will no longer produce nail tissue. For most people, that cosmetic compromise is well worth the permanent fix.
More involved surgery is sometimes necessary when the nail bed itself has been badly damaged by a prior injury or when a structural abnormality like a rotated matrix needs correction. Nail bed reconstruction can involve grafts or microsurgical techniques to rebuild the tissue that guides normal nail growth.1PubMed Central. Nail bed injuries and deformities of nail These are more specialized procedures, typically performed by a hand surgeon or plastic surgeon, and they carry a longer recovery period. But for someone whose nail has been chronically deformed after a crush injury or laceration, reconstruction offers the best chance of restoring something close to a normal-looking nail.
How Long the Fix Takes
Whatever approach you use, patience is non-negotiable. You are not straightening the existing nail so much as waiting for a new nail to grow out correctly while keeping the conditions favorable for straight growth. Fingernails grow at roughly three millimeters per month in younger adults, which means replacing the full visible nail takes about four to six months.6PubMed Central. Nails in older adults The timeline stretches out as you get older. Nail growth rate drops measurably with age, declining by about half a percent per year starting around age 25, which means a person in their seventies may wait considerably longer to see the full result.
If you had surgery, the nail typically begins to look recognizably normal within three to four months, though it may take a full growth cycle for the texture and contour to settle. Bracing and taping require ongoing attention for at least that long. The frustrating part is that the nail may look fine for weeks and then seem to relapse. This is normal during the transition period as the corrected growth gradually pushes out the older, misdirected nail.
Preventing It from Coming Back
Once you have dealt with a sideways-growing fingernail, a few habits help keep it from recurring. Trim your nails straight across, and avoid cutting them shorter than the tip of the finger. Very short nails encourage the skin fold to ride over the nail edge, which sets the stage for ingrowth on the next growth cycle. Use sharp, clean clippers and file rough edges gently rather than tearing or biting them.
Protect your fingers during physical work. Gloves that fit well can absorb impact and reduce the repetitive pressure that contributes to matrix damage over time. If you do injure a fingertip, take the injury seriously even if it seems minor. A smashed fingertip that heals without attention to the nail bed is one of the most common precursors to chronic nail deformity. Keeping the nail bed aligned during healing, sometimes with a simple splint or wound care from a doctor, can prevent years of crooked regrowth.1PubMed Central. Nail bed injuries and deformities of nail
For people with fungal nail infections, treating the infection itself is part of the prevention strategy. A thickened, fungal nail does not grow in a straight, predictable path, and the distortion can push the edges sideways into the surrounding tissue. Addressing the infection with antifungal treatment allows the healthy replacement nail to grow more evenly.
The Emotional Side of Nail Problems
It is worth acknowledging that a visibly deformed fingernail can affect more than just physical comfort. Fingernails are constantly on display, and a nail that looks abnormal can create self-consciousness about handshakes, gestures, and everyday social interactions. Research on nail disorders and quality of life has found that structural nail abnormalities, along with conditions like fungal nail infection and nail psoriasis, have a measurably higher impact on daily life than many other nail issues. The effect is more pronounced when multiple nails are involved and tends to be more significant for women.10PubMed Central. The Impact of Onychopathies on Quality of Life: A Hospital-based, Cross-sectional Study
If a crooked fingernail is bothering you enough to search for solutions, that is reason enough to pursue a fix. The range of treatments, from simple taping at home to minor outpatient procedures, means there is almost always something that can be done. Even in cases where the nail cannot be made perfectly symmetrical again, reducing pain and improving the appearance enough to feel comfortable is a realistic goal for most people.
When the Problem Is Actually Something Else
Not every nail that looks sideways is simply growing at the wrong angle. A few conditions can mimic the appearance of misdirected growth while having a different underlying cause. Retronychia, where the nail grows backward into the proximal fold rather than outward, often presents as chronic swelling at the base of the nail that gets mistaken for an infection or an ingrown nail at the side.7PubMed Central. Retronychia Pincer nails, where the nail curves inward from both sides like a tube, are a different deformity from sideways growth, though the two can overlap. And subungual exostosis, as mentioned earlier, produces a hard bump under the nail that can tilt the nail plate at an unusual angle without the matrix itself being misdirected.2PubMed Central. Subungual exostosis of the finger with nail plate induction
If your nail looks odd but your home care efforts are not making any headway after a couple of months, it is worth having a doctor examine the finger. Simple inspection and possibly an X-ray can distinguish between a nail that just needs guidance and one that has a structural problem requiring a different treatment altogether. A misidentified problem is the most common reason people spend months trying fixes that never work.