An ingrown toenail happens when the edge or corner of a nail grows into the soft skin beside it, causing pain, swelling, and redness along the nail border. The big toe is the most common spot. If you’re feeling a sharp tenderness when you press on the side of your toenail, or noticing the skin around it looks puffy and red, you’re likely dealing with one.
What an Ingrown Toenail Looks and Feels Like
The earliest and most reliable sign is pain along one or both sides of the toenail, especially when you press on it or wear tight shoes. The skin next to the nail will look swollen and feel tender to the touch. At this point you might not see anything dramatic, just a strip of red, irritated skin hugging the nail edge. Many people first notice it while walking, because each step pushes the shoe against the tender spot.
As it progresses, the redness spreads and the swelling becomes more obvious. The skin may start to fold over the edge of the nail. You might notice clear fluid weeping from the area. In more advanced cases, the body responds to the constant irritation by forming a small mound of raw, bumpy tissue (called granulation tissue) along the nail border. At that point the toe is typically painful even without pressure.
How It Differs From Other Nail Problems
Ingrown toenails are sometimes confused with a nail infection called paronychia, which causes similar symptoms: pain, redness, warmth, and pus around the nail. The key difference is location. An ingrown nail produces symptoms specifically where the nail edge digs into the skin fold, while paronychia can develop anywhere around the nail, including the cuticle area. In fact, an ingrown toenail can lead to paronychia if bacteria enter through the broken skin, so the two conditions sometimes overlap.
A bruise under the nail (from stubbing your toe or dropping something on it) can also cause throbbing pain, but the discoloration is dark purple or black beneath the nail plate itself, not redness in the skin beside it. Fungal nail infections turn the nail yellow, thick, and crumbly over weeks or months but rarely cause the acute tenderness that makes you wince when you touch the side of the toe.
Three Stages of Severity
Clinically, ingrown toenails fall into three stages, and knowing where yours sits helps you decide what to do about it.
- Stage 1: Redness, mild swelling, and pain when pressure is applied to the nail border. No drainage. This is the stage most people can manage at home.
- Stage 2: Increased swelling, clear or yellowish fluid draining from the area, and pain that may be constant rather than only with pressure. The skin is starting to react more aggressively to the embedded nail.
- Stage 3: The body has built up a small mound of raw granulation tissue over or beside the nail edge. There is often pus, significant pain, and sometimes bleeding. This stage almost always needs professional treatment.
Signs the Nail Is Infected
Not every ingrown toenail gets infected, but many do because the nail creates a tiny wound in the skin that bacteria can enter. Watch for these signs: pus or cloudy drainage coming from the toe, skin that feels warm or hot to the touch, redness that spreads beyond the immediate nail border, and pain that worsens rather than improves over a couple of days. The skin around the nail may darken in color on deeper skin tones, making redness harder to spot. In that case, increased warmth and swelling are more reliable indicators.
A more serious warning sign is red streaks extending away from the toe along the foot, which suggests the infection is spreading. Fever alongside those streaks needs immediate medical attention.
What Causes Them
The most common cause is cutting your toenails too short or rounding the corners, which encourages the nail to grow into the skin as it lengthens. Tight or narrow shoes push the skin against the nail edge repeatedly. Other contributors include toenail injuries (stubbing your toe, dropping something on it), naturally curved nails that run in families, and excessive sweating that softens the skin and makes it easier for the nail to penetrate.
Home Care That Works
For a stage 1 ingrown toenail with no signs of infection, warm soaks are the standard first step. Mix one to two tablespoons of Epsom salt into a quart of warm water and soak your foot for 15 minutes. Do this several times a day for the first few days. The warm water softens the skin and reduces swelling, which can free the nail edge enough to relieve the pressure.
After soaking, gently dry the toe and try to lift the nail edge slightly away from the skin. Some people place a tiny piece of clean cotton or dental floss under the corner of the nail to keep it from digging back in. Wear open-toed shoes or sandals when possible to reduce pressure on the area, and keep the toe clean and dry between soaks. Over-the-counter pain relievers can help with discomfort.
If the redness, swelling, or drainage hasn’t improved after a few days of consistent home care, or if symptoms are getting worse, it’s time for professional treatment. Home care works well for mild cases, but once infection sets in or granulation tissue forms, you’re unlikely to resolve it on your own.
What a Doctor Can Do
The most common procedure is a partial nail avulsion, where the doctor numbs your toe and removes the strip of nail that’s digging into the skin. The toe is bandaged, and you can typically walk out of the office. Recovery takes a few weeks, and the nail grows back over several months.
The catch is that recurrence rates for simple nail removal are high, ranging from 64% to 83% in studies. To prevent the nail from growing back into the same spot, doctors often apply a chemical to the exposed nail root after removal, which destroys that narrow strip of growth tissue permanently. This drops the recurrence rate dramatically, to roughly 1% to 4%. The tradeoff is a slightly narrower nail, but most people find that preferable to repeated ingrown nails.
Who Needs Extra Caution
If you have diabetes or poor circulation in your feet, an ingrown toenail is not a DIY problem. Reduced blood flow slows healing and makes infections harder to fight, and nerve damage from diabetes can mask pain signals that would otherwise alert you to worsening trouble. The American College of Foot and Ankle Surgeons recommends that people with diabetes inspect their feet daily and avoid any “bathroom surgery” on nails, corns, or calluses. Even a mild ingrown toenail warrants a visit to a podiatrist in this case.
People with compromised immune systems or those on blood thinners should also have ingrown toenails evaluated professionally rather than managed at home.