What is Nail Trauma?
Nail trauma is a common occurrence that is usually caused by:
- Crushing or dropping something on the toe
- Abnormal biomechanics
- Repetitive micro-injuries caused by excessive use
- Pressure arising from ill-fitting footwear
Forms of nail trauma vary in severity but can most frequently lead to a subungual hematoma, a dark discolouration due to the pooling of blood under the nail. More severe cases can lead to splitting or detachment of the nail from the nail bed, or an underlying tissue or bone fracture.
Who Is At Risk For Nail Trauma?
This condition can affect individuals of all genders and ages as it is often caused by an result of injury to the nail. However, there are certain groups of people that may experience nail trauma more often, such as:
Individuals that run intensively may find themselves with bleeding, blistering or black toenails. This is caused by repetitive microtrauma from the top of the shoe impacting the toes while running.
Those wearing ill-fitting shoes
Overly tight shoes will squeeze the toes together, while loose-fitting shoes may have an overly large toe box, causing the toes to bump against the shoe repeatedly.
When is Nail Trauma, Not Nail Trauma?
While uncommon among Singaporeans, certain types of skin cancer (melanoma in particular) can resemble nail trauma. The pattern for a subungual melanoma is usually distinctive and is characterised by a vertical brown or black discolouration that stretches from the base of the nail to the tip. This discolouration will appear gradually over time and is often painless but can potentially spread to other parts of the body.
Subungual melanomas are life-threatening, but often get diagnosed at a later stage as the foot is usually overlooked during an inspection. If your nails have developed a pattern of discolouration without any cause, consult a podiatrist immediately as this could dramatically increase your chances of survival.
Mild cases may require offloading during the healing process while more complicated injuries like fractures require a thorough examination and a diagnostic ultrasound or x-ray. These assessments help determine the extent of damage so the appropriate mode of treatment can be advised.
Nail deformities inflicted by trauma are also likely to require a minor surgical procedure to the nail plate along with adequate follow-up procedures to ensure proper healing.
Patients with underlying biomechanical issues will typically be prescribed custom insoles to prevent further deterioration from microtrauma and allow for healing of the existing injury. If left untreated, the nail is likely to become dystrophic and unsightly due to constant trauma, and may not be able to return to its original condition. Speak to your podiatrist to discuss your options and prevent this from happening.