How Do Ingrown Toenails Occur? What You Need to Do

An ingrown toenail happens when the edge of a toenail grows into the skin beside it, usually on the big toe. The nail pierces the skin, the body responds with inflammation, and the area becomes red, swollen, and painful. If the skin breaks, bacteria can enter and cause an infection that needs treatment.

How Do Ingrown Toenails Occur

The most common cause is cutting toenails incorrectly. When you cut nails too short or round the corners, the skin at the side of the toe can fold over the nail edge. As the nail grows forward, it pushes into that skin instead of sliding past it.

Tight shoes are the second major cause. Shoes that squeeze the toes press the skin against the nail. Over time, that constant pressure forces the nail edge into the flesh. This is why ingrown toenails are common in people who wear narrow dress shoes, work boots, or soccer cleats for long hours.

Injury can also trigger one. Stubbing the toe, dropping something heavy on it, or repeated pressure from running can damage the nail bed. The nail then grows back irregularly and digs into the skin.

Some people are simply more prone to them. Nails that naturally curve more than usual, thick nails from fungal infections, and certain foot shapes all raise the risk. Genetics plays a role for many people who get them repeatedly.

What Are the First Signs

Pain along the side of the nail is usually the first symptom. The toe may feel sore when you press on it or when a shoe rubs against it. The area often looks red and slightly swollen.

As the condition progresses, the swelling increases. The skin beside the nail may feel warm. You might notice fluid draining from the area, which can be clear or yellowish. That drainage means the skin has broken and the body is fighting off bacteria.

If an infection takes hold, the pain becomes sharper and more constant. The toe may throb even when nothing touches it. Pus may appear, and the skin can look darker red or purple. Some people develop a low-grade fever.

People with diabetes, peripheral artery disease, or a weakened immune system need to take any toe infection seriously. What looks like a minor issue can become a serious infection quickly in these groups.

What You Can Do at Home

For a mild ingrown toenail with no signs of infection, home care often resolves the problem. Soak the foot in warm water for 15 to 20 minutes, two to three times a day. This softens the skin and nail, which reduces pressure and makes the area easier to manage.

After soaking, gently lift the edge of the nail away from the skin. Place a small piece of clean cotton or dental floss under the corner of the nail. This encourages the nail to grow above the skin rather than into it. Change the cotton daily and keep the area dry between soaks.

Wear open-toed shoes or wide, comfortable footwear until the toe heals. Avoid any shoe that presses on the affected area. Over-the-counter pain relievers like ibuprofen or acetaminophen can help with discomfort, but they do not treat the underlying problem.

Do not cut the nail further or attempt to dig it out yourself. This almost always makes things worse. You also risk introducing more bacteria into an already irritated area.

Home treatment works only in the early stages. If the toe is already draining pus, very painful, or not improving after three to five days of home care, stop and see a clinician.

When You Need Medical Treatment

See a doctor or podiatrist if you have diabetes, poor circulation, or a weakened immune system and you develop an ingrown toenail. These conditions change how your body fights infection and heals. Waiting can lead to complications.

You should also seek medical care if the toe shows clear signs of infection. Redness spreading beyond the toe, pus, warmth, or significant swelling all warrant professional attention. The same applies if the pain prevents you from walking normally or wearing any shoe.

A clinician may prescribe oral antibiotics if an infection is present. They may also perform a procedure called a partial nail avulsion. This involves numbing the toe, removing the offending edge of the nail, and applying a chemical to prevent that section of nail from growing back.

This procedure has a high success rate and is done in the office. Recovery usually takes a few days, and most people return to regular shoes within a week. In severe or recurring cases, a doctor may remove a larger portion of the nail or the entire nail.

How to Prevent Ingrown Toenails

Cut toenails straight across. Do not round the corners to match the shape of your toe. Use nail clippers designed for toenails, which are larger and give you more control than small fingernail clippers.

Keep nails at a moderate length. Cutting them too short invites the skin to fold over the nail edge. Leaving them too long increases pressure inside shoes. Aim for the top of the nail to be roughly even with the tip of your toe.

Choose shoes with a wide toe box. Your toes should have room to move slightly inside the shoe. If you can feel the side of your big toe pressing against the shoe material, the shoe is too narrow.

Wear proper footwear for activities. Soccer, climbing, and other sports that stress the feet need shoes designed for those movements. General-purpose shoes may not protect the toes adequately.

Check your feet regularly, especially if you have diabetes or reduced sensation in your feet. Early detection of a problem makes treatment simpler and more effective.

What Not to Do

Several popular internet remedies are not supported by evidence and can cause harm. One common suggestion is to cut a V-shape into the center of the nail. The idea is that the nail will grow toward the center instead of the sides. This does not work. The nail grows from the base, not the tip, so changing the shape of the free edge has no effect on how the nail grows.

Another myth is that soaking the foot in vinegar or bleach prevents infection. Vinegar has mild antibacterial properties, but it is not an effective treatment for an established infection. Bleach can damage skin and should never be used on broken skin.

Attempting surgery on yourself is dangerous. Some people try to cut away the skin beside the nail or dig out the nail with scissors or a knife. This carries a high risk of infection, excessive bleeding, and permanent damage to the nail bed.

Ignoring the problem is also a mistake. An untreated ingrown toenail can progress from a minor irritation to a deep infection. In rare but serious cases, the infection can spread to the bone, a condition called osteomyelitis. This is more likely in people with diabetes or compromised circulation.

When to Expect Recovery

With consistent home care, a mild ingrown toenail often improves within a few days. Full resolution of the redness and swelling may take one to two weeks. The nail itself takes months to grow out fully, since toenails grow slowly.

After a partial nail avulsion procedure, most people feel significant relief within 24 to 48 hours. The toe may be sore for a few days, but the sharp pain from the nail digging into skin is gone immediately.

Recurrence is possible. Studies show that without the chemical treatment during surgery, ingrown toenails return at a higher rate. With the chemical matrixectomy, the recurrence rate is lower, though the procedure is not guaranteed to prevent regrowth forever.

If you have had multiple ingrown toenails in the same toe, talk to a podiatrist about long-term management. Some people benefit from regular professional nail care, especially if they cannot safely trim their own nails due to vision problems, reduced flexibility, or nerve damage.