Thick toenails are very common, especially on the big toe. They can be hard to cut, press on the inside of shoes and make walking uncomfortable. The good news is that they can usually be made much more comfortable.
Why toenails get thick
- Age, as nails naturally grow more slowly and thicken over time
- Repeated pressure or knocks, for example from tight shoes or sport
- A one-off injury, such as dropping something on your toe
- Fungal nail infection, which can also cause yellow or crumbly nails
- Some health conditions that affect circulation or the skin
Is it a fungal infection?
Not always. A fungal nail often looks yellow, white or brown, may crumble at the edges and can spread to other nails. A nail thickened by pressure is often more even in colour. We can take a look and explain what's most likely going on. You can read more on our fungal infection page.
How thick nails are treated
We gently file the nail down using a specialist burr, so it's thinner, smoother and easier to cut. It isn't painful, and most people notice straight away that their shoes feel more comfortable. Because thick nails keep growing back, many people book regular appointments every couple of months. See our thick nail reduction page.
When to see your GP
See your GP if a nail changes suddenly without an obvious reason, if there's a dark streak under the nail, or if the toe is red, hot or swollen.
Quick answers
Will my nail ever go back to normal?
Sometimes, if the cause was a one-off injury. More often, regular reduction keeps the nail comfortable and manageable.
Does nail reduction hurt?
No. It's a gentle filing process and most people find it relaxing.
Can I cut thick nails myself?
It's tricky and can split the nail. Soaking first helps, but professional reduction is easier and safer.