An ingrown toenail announces itself with a distinct tenderness along one or both sides of the nail, usually on the big toe. The edge of the nail curves or digs into the surrounding skin, causing pain that worsens with pressure from shoes or even bedsheets. If your toe hurts specifically where the nail meets the skin fold, and that area looks red or feels swollen, you’re almost certainly dealing with an ingrown nail.
What It Looks and Feels Like
The earliest sign is localized pain along the nail border, especially when you press on it or wear closed-toe shoes. The skin next to the nail will appear slightly red and puffy. At this point, the nail edge has started pressing into the soft tissue but hasn’t broken through the skin. Many people describe it as a sharp, pinching sensation that flares when they stub their toe or walk for long periods.
As the nail digs deeper, the redness and swelling become more obvious. The skin alongside the nail may feel warm to the touch and look noticeably inflamed. You might find it painful to walk normally, and even light contact with socks or shoes causes discomfort. The affected side of the toe can appear visibly larger than the other side.
In more advanced cases, the body responds to the nail as a foreign object. You may notice a small, raised bump of raw-looking tissue (called granulation tissue) forming along the nail edge. The skin fold next to the nail can thicken and grow over part of the nail itself. At this stage, drainage is common, and the pain is often constant rather than only triggered by pressure.
Signs of Infection
Not every ingrown toenail gets infected, but the warm, moist environment of a shoe makes it easy for bacteria to move in. The clearest sign is pus or cloudy fluid draining from the area where the nail meets the skin. The redness may spread beyond the immediate nail border, and the pain can shift from a dull ache to a throbbing that doesn’t let up. Some people notice a foul smell or see yellowish-green discharge on their sock at the end of the day.
If redness begins tracking up the toe or toward the foot, or if you develop a fever, the infection has moved beyond the surface. This is more urgent and needs professional treatment rather than home care.
Why It Happens
The most common cause is trimming your nails too short or rounding the corners. When you cut the nail into a curve, the edges can angle downward into the skin as the nail grows out. Shoes that squeeze the toes, particularly narrow dress shoes or cleats, push the skin against the nail edge and make the problem worse. Stubbing your toe or dropping something on it can also knock the nail off its normal growth path.
Some people are simply more prone to ingrown nails because of their nail shape. Nails that are naturally very curved (sometimes called “pincer nails”) press into the skin more easily regardless of how they’re trimmed. Adolescents tend to get them more frequently because increased sweating softens both the nail and the surrounding skin, making it easier for the nail to penetrate. Runners, soccer players, and anyone whose feet take repetitive impact are also at higher risk.
How to Tell It Apart From Other Toe Problems
A few conditions can mimic an ingrown toenail. A fungal nail infection can thicken the nail and cause pressure on the surrounding skin, but it usually changes the nail’s color (yellow, white, or brown) and texture without the sharp, localized tenderness along one side. A bacterial infection of the skin fold around the nail, called paronychia, causes redness and swelling that wraps around the base or sides of the nail but isn’t driven by the nail physically growing into the tissue.
The simplest way to check: gently pull the skin away from the nail edge. If you can see or feel the nail digging into the skin fold, and releasing that pressure brings immediate relief, that’s an ingrown nail. If the pain is more diffuse across the whole toe or sits under the nail rather than along its border, something else may be going on.
What You Can Do at Home
Mild ingrown nails, where you have some redness and tenderness but no pus or severe swelling, often respond to a few days of simple care. Soak the foot in warm water for 15 to 20 minutes, two or three times a day. This softens the skin and reduces swelling enough that the nail edge may free itself. After soaking, you can try gently lifting the nail corner and placing a tiny piece of clean cotton or dental floss underneath to encourage the nail to grow above the skin rather than into it. Replace the cotton daily.
Wear open-toed shoes or sandals whenever possible to take pressure off the area. Applying an over-the-counter antibiotic ointment can help prevent infection while the skin heals. If there’s no improvement after three to five days, or if the pain and redness are getting worse, home care alone isn’t going to resolve it.
Who Needs Professional Care Sooner
People with diabetes face a particular risk with ingrown toenails. Reduced blood flow slows healing, and nerve damage (neuropathy) can mask pain, meaning the nail may dig deeper and become infected before you notice a problem. An infected ingrown nail in a diabetic foot can progress to an open ulcer that’s difficult to heal and, in severe cases, may threaten the toe itself. If you have diabetes, poor circulation, or significant nerve damage in your feet, skip the home remedies and get the toe looked at promptly.
The same applies if you see pus draining from the site, if the redness is spreading, or if the pain is severe enough to interfere with walking. A podiatrist or primary care provider can numb the toe and remove the offending nail edge in a quick office visit, often providing immediate relief.
Preventing the Next One
The single most effective change is how you cut your toenails. The American Academy of Dermatology recommends cutting straight across rather than rounding the corners. Leave the nail long enough that the corners sit above the skin fold rather than below it. A good rule of thumb: the white free edge of the nail should be visible, roughly even with the tip of the toe.
Choose shoes with enough room in the toe box that your toes aren’t pressed together. If you run or play sports that involve kicking, make sure your athletic shoes fit properly and aren’t a half-size too small. Keeping your feet clean and dry helps too, since chronically damp skin is softer and more easily penetrated by a growing nail edge. If you keep getting ingrown nails on the same toe despite good trimming habits, a podiatrist can perform a procedure to permanently narrow the nail so the problematic edge doesn’t grow back.