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Black Spot on Toenail: Should You Be Worried?

Generally speaking, you don’t have to worry about a black spot on the toenail. Incidents like . In many cases, you can let your toenail heal naturally, but if you have a fungal infection or severe pain, you should schedule an appointment with your chiropodist. Often, incidents like stubbing your toe can cause a black toenail, but they can also be a symptom of an underlying health condition you are already aware you have. 

Source: istock

Causes of Black Toenail

If you see a full black toenail or a black spot on your toenail, it is likely for one of the following three reasons:

  • Trauma (injury)
  • Natural pigmentation changes
  • Fungal toenail

In some (rarer) cases, a serious illness like heart disease, diabetes or melanoma can cause a black toenail. 

Trauma (Injury)

Sometimes our foot health takes a turn for the worse when we injure ourselves. Dropping a heavy object on your toe or stubbing your toe on a piece of furniture can cause a subungual hematoma, or bleeding and bruising under the nail. This gives it a black appearance and it is usually tender to the touch. 

There are certain medical procedures (like drainage and decompression) that treat black toenails caused by injury, but for minor cases, resting and using ice while elevating your injury is sufficient. 

Source: istock

Natural Pigmentation Changes

For people with darker skin tones, black patches can sometimes appear underneath the toenails over time. Medical News Today notes that this will usually happen to matching toes on each foot. So if your black spot is happening on corresponding toes, this may be the reason. 

Fungal Toenail

Fungal toenail infections usually cause yellow or brown discolouration and thickening of the nail. But when debris builds under the nail bed, it can appear black. 


There are topical and oral antifungal medications you can take to treat fungal toenail. In some cases, you can even have your nail removed. But prevention is just as important when it comes to contagious foot conditions. Proper toenail care like keeping your nails (and the rest of your feet) clean can ward off infections, and for extra peace of mind, you can enjoy regular medical pedicures with your chiropodist.

Source: istock. While Fungal Toenail usually looks thick and yellowish brown, there can aslo be black spots caused by debris build up.

Black Toenails? Worry Not!

Discoloured toenails can be a strange sight, but Feet First Clinic has got you covered! Our top notch nail care services can help you feel your best and get your back on your feet in no time! Call us at (416) 769-3338 or book an appointment using the form below or the button at the top of your browser!

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Carolina Charles

Patient Relation Coordinator (She/Her)

If you’ve been to the clinic before, chances are you had the pleasure of meeting Carolina! Carolina’s daily goal is going above and beyond to make sure patients are always completely satisfied. Having worked in the podiatry industry for 22 years, Carolina brings a wealth of knowledge pertaining to client service, insurance policies, and procedures. She steers the ship to make sure everything runs smoothly on the daily. Carolina is known for spicing up every outfit with her signature costume jewellery.