An ingrown toenail happens when the edge or corner of a nail grows into the skin beside it, and the signs are usually hard to miss: tenderness along one side of the nail, redness where the skin meets the nail edge, and mild swelling that gets worse when you press on it or wear tight shoes. The big toe is the most common spot. If you’re wondering whether that’s what you’re dealing with, here’s how to tell for sure and what to watch for as it progresses.
The Earliest Signs
Before it looks like much of anything, an ingrown toenail starts as a vague soreness along one side of the nail. You might only notice it when you put on shoes or bump the toe. At this point, the skin next to the nail may look slightly pink or puffy compared to the same spot on your other foot.
Within a day or two, the tenderness becomes more specific. You can usually pinpoint exactly where it hurts by pressing gently along the nail fold (the strip of skin that runs alongside the nail). The sore spot will be right where the nail edge is digging in. If you look closely, you may see that the skin is starting to ride up over the corner of the nail or that the nail edge has curved down into the skin. The area will be red or, on darker skin tones, noticeably darker than the surrounding tissue.
How It Feels Compared to a Stubbed Toe or Bruise
A stubbed toe or bruised nail usually hurts across a broad area and improves steadily over a few days. An ingrown toenail is different in three ways. First, the pain is concentrated along one edge of the nail rather than across the whole toe. Second, it doesn’t get better on its own; it tends to stay the same or slowly worsen. Third, the pain flares with any pressure from the side, like a snug shoe or a bedsheet resting on the toe at night, while a bruise hurts more with direct downward pressure on the nail.
Signs the Nail Is Infected
Not every ingrown toenail gets infected, but when the nail keeps pushing into the skin, bacteria can move in. The Cleveland Clinic lists these as the hallmarks of an infected ingrown toenail:
- Pus or liquid draining from the toe, often yellowish or greenish
- Redness or darkening that spreads beyond the immediate nail edge
- Swelling that makes the side of the toe look puffy or bulging
- Warmth you can feel when you touch the toe
- Increasing pain, sometimes throbbing even when you’re not touching it
If the skin next to the nail is actually growing over the nail edge, that’s another clear sign you’re past the mild stage. At this point, home care alone may not be enough.
What It’s Not: Fungal Nails and Cuticle Infections
A couple of other toe problems can cause redness and soreness in the same area, so it helps to know the differences.
A fungal nail infection changes the nail itself. The nail plate thickens, turns yellow or white, crumbles at the edges, and may lift off the nail bed. There can be a noticeable smell. Fungal infections develop slowly over weeks or months and usually aren’t very painful in the early stages.
A cuticle infection (paronychia) causes redness and swelling at the base of the nail near the cuticle, not along the sides. It often produces yellow-green discharge and is typically triggered by nail biting, picking at cuticles, or having wet hands frequently. An ingrown toenail, by contrast, hurts along the side of the nail where the edge meets the skin, and it’s almost always on a toe rather than a finger.
If your pain is specifically along one side of the toenail, the skin is swollen there, and the nail edge looks like it’s pressing into or buried under the skin, you’re almost certainly looking at an ingrown toenail.
Why It Happened
The most common cause is trimming your toenails too short or rounding the corners. When you curve the nail at the edges, the regrowth has nowhere to go but into the skin. Over time, this habit can make ingrown toenails a recurring problem. Cutting nails straight across, leaving them roughly level with the tip of the toe, avoids this.
Other common triggers include wearing shoes that crowd the toes, stubbing or jamming the toe, and having nails that naturally curve sharply on the sides. Some people are simply more prone to them because of their nail shape.
What You Can Do at Home
If the toe is sore and red but there’s no pus, no spreading redness, and no throbbing pain at rest, you can try managing it yourself. The Mayo Clinic recommends soaking the foot in warm, soapy water for 10 to 20 minutes, three to four times a day, until the toe improves. The warm water softens the skin and reduces swelling around the nail edge, which can allow the nail to release from the skin fold on its own.
After soaking, gently push the swollen skin away from the nail edge with a clean finger or cotton swab. Wear open-toed shoes or roomy sneakers to keep pressure off the toe. Avoid digging at the nail or trying to cut out the ingrown corner yourself. That kind of “bathroom surgery” often removes too much nail and sets you up for the problem to come right back, sometimes worse.
Who Should Skip Home Care Entirely
If you have diabetes, don’t try to treat an ingrown toenail on your own. Reduced blood flow and nerve damage in the feet can mask how serious the problem is and slow healing significantly. A minor nail issue can escalate into a deeper infection that’s hard to control. Podiatrists recommend that all people with diabetes get professional care for ingrown toenails rather than managing them at home.
The same applies if you have poor circulation from any cause, if pus is already draining from the toe, or if the redness and swelling seem to be spreading beyond the immediate area around the nail. These are signs the infection is advancing and needs professional treatment, which typically involves numbing the toe and removing the portion of nail that’s embedded in the skin. The procedure is quick, and most people feel immediate relief once the offending nail edge is gone.