Thick toenails are pretty common—and there are several reasons they can happen. Here’s a clear, teen-friendly breakdown 👇
Common reasons toenails get thick
1. Fungal infections (most common)
- Nail fungus can make nails thick, yellowish, brittle, or crumbly
- It often starts small and slowly gets worse
- More likely if feet stay sweaty or damp a lot (sports shoes, locker rooms)
2. Repeated pressure or trauma
- Tight shoes or lots of running/sports can cause nails to thicken over time
- Even small bumps you don’t remember can affect nail growth
3. Normal aging
- As people get older, nails naturally grow thicker and slower
(This is more common in adults, but still worth knowing.)
4. Skin conditions
- Conditions like psoriasis or eczema can affect nails, making them thick or uneven
5. Health conditions
- Less commonly, circulation problems or other medical issues can change nail growth
When should you pay attention?
It’s a good idea to tell a parent/guardian or see a healthcare professional if:
- The nail is painful
- There’s swelling, redness, or discharge
- The nail suddenly changes color or shape
- Multiple nails are affected
- It doesn’t improve over time
What helps (general care tips)
- Keep toenails trimmed straight across
- Wear shoes that fit well (not too tight)
- Keep feet clean and dry
- Don’t pick or dig at thick nails
Important: Don’t try to diagnose or treat nail problems on your own with random products—some issues look similar but need different care.
If you want, I can also explain how doctors tell the difference between fungus and other causes, or what treatments usually look like (at a high level).
