Discovering a green toenail after an injury can be alarming. But, while it’s certainly something to pay attention to, it’s often a treatable condition.
This article explains the common causes, symptoms to watch out for, and the best ways to treat and prevent a green toenail after injury. We’ll cover everything you need to know to get your toe back to health.
However, it is important to note that this article is not a substitute for medical advice. If you are concerned about a green toenail, it’s best to seek professional medical advice.
Causes of green toenails after injury
If you’ve stubbed your toe or dropped something heavy on your foot, and now you see a green toenail, here’s what could be going on.
Toenail trauma and subungual hematoma
Blunt force, crushing injuries, or repetitive motion can damage the toenail. This can cause blood to collect under the nail, called a subungual hematoma.
A large blood collection (taking up a quarter or more of the nail surface) means there’s a high risk of a cut or a fracture to the toe.
Bacterial infection: The primary culprit
The most common cause of green toenails is a bacterial infection from Pseudomonas aeruginosa.
When you injure your toe, it can create an opening for bacteria to enter. If moisture also gets trapped under the nail, that creates the perfect environment for bacteria to grow.
Recognizing the Symptoms
The telltale sign of a green toenail is, of course, the color. It may range from a faint greenish-white to a dark, almost black, green. Typically, the discoloration starts near the cuticle and then slowly spreads outward as the nail grows.
You might notice other symptoms, too, such as:
- Thickening of the nail
- The nail separating from the nail bed (this is called onycholysis)
- Pain or tenderness in the area
- Inflammation of the skin surrounding the nail
If you notice any of these symptoms along with the green discoloration, it’s a good idea to get it checked out.
Risks of infection from toenail trauma and when to see a specialist
Trauma to your toenail can increase your risk of infection. If an infection goes untreated, it can spread and cause more problems. In severe cases, a bone infection called osteomyelitis can develop.
In those extreme situations, you may need IV antibiotics or even partial amputation of the toe.
That’s why it’s important to seek medical help if you’ve injured your toenail or if you see signs of infection, such as:
- redness
- swelling
- pus
You should also seek immediate care if:
- More than 25% of your nail is covered by a bruise (subungual hematoma).
- You are experiencing severe pain.
Treatment options for green toenails after injury
A green toenail after an injury can be treated in several ways.
Home care
You can start with these strategies, including potentially using an Epsom salt soak for infection:
- Keep the area clean and dry.
- Trim the nail regularly to avoid further trauma.
- Avoid tight shoes that can make the problem worse.
Medical treatments
A doctor may recommend one of these treatments:
- Topical antibiotics or antifungals for mild infections
- Oral antibiotics for more severe infections or osteomyelitis
- Drainage of subungual hematoma, especially if it covers a large area
- In some cases, nail removal may be needed to treat the infection or repair the nail bed
Don’t delay seeking treatment. The sooner you get your injury treated, the better your chances of a full recovery.
Frequently Asked Questions
Can a bruised toenail turn green?
Yes, a bruised toenail can definitely turn green. The color change is usually due to a bacterial infection, often Pseudomonas aeruginosa, thriving under the nail. The green color comes from pigments produced by the bacteria. It’s important to address it promptly to prevent further complications.
Can I still get my nails done with a “greenie”?
It’s generally not recommended to get your nails done if you have a green toenail. Covering the infection with artificial nails or polish can trap moisture and worsen the condition. It’s best to treat the infection first before considering any cosmetic procedures.
Does hydrogen peroxide get rid of toenail fungus?
While hydrogen peroxide has antiseptic properties, unlike Hibiclens, it’s not typically effective for treating toenail fungus or a green nail infection. It might help to clean the area, but it won’t penetrate deeply enough to eliminate the underlying cause. Specific antifungal or antibacterial treatments are usually required.
How do you treat green toenails?
Treatment for green toenails usually involves topical or oral medications prescribed by a doctor. Keeping the area clean and dry is also essential. In some cases, removing the affected part of the nail may be necessary to allow for better penetration of the medication. Avoiding tight-fitting shoes and keeping feet dry are also crucial.
Why is my smashed nail turning green?
When a nail is smashed, it creates an environment where bacteria can easily enter and flourish. The trauma to the nail bed provides a breeding ground for Pseudomonas aeruginosa, leading to the characteristic green discoloration. Any injury that separates the nail from the nail bed increases the risk of this type of infection.
The Bottom Line
If you injure your toe, you could develop a hematoma underneath the nail. This can lead to a bacterial infection that turns your toenail green.
It’s important to keep your feet clean and treat any injuries promptly. You can help prevent toenail injuries by wearing shoes that fit properly and protect your toes. Keep your toenails trimmed and clean.
If you have a significant foot injury, see a doctor right away.