5 main causes of black nails in adults

Black nails can be a source of concern for many people, raising questions about their origin and significance. These nails, sometimes referred to as onychomycosis, are more common in adults than in children. In this article, we will explore the five main causes of black nails in adults, shedding light on underlying factors and preventive measures.

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1. Trauma 

One of the most common causes of black nails in adults is direct trauma to the nail, such as a blow or excessive pressure. This can happen accidentally by forcefully closing a door on one's fingers or wearing ill-fitting shoes.

When a nail is injured, it can develop subungual hematoma, leading to darkening of the nail's color. It is essential to take care of one's nails to prevent such traumas.

2. Fungal Infections 

Fungal infections, such as onychomycosis, are another frequent cause of black nails in adults. These fungi typically thrive in warm and humid environments, like the interior of sports shoes or around public swimming pools.

They can infect the nail, causing it to thicken, become detached, and turn black. Rigorous foot hygiene and prevention of excessive moisture are crucial to avoid these infections.

3. Subungual Hemorrhage 

Subungual hemorrhage, triggered by bleeding under the nail, can give the appearance of a black nail. This condition often results from minor injuries, such as a blow to the nail, but can also be associated with blood circulation issues. It is crucial to monitor any changes in nail color and consult a healthcare professional if there are any doubts.

4. Underlying Medical Conditions 

Certain underlying medical conditions, such as diabetes or vascular disorders, can alter blood circulation to the nails, leading to their darkening. Diabetes, in particular, can result in peripheral neuropathy, affecting sensation in the feet and increasing the risk of nail injuries. Proper management of these health conditions is essential to maintain nail health.

5. Medication Side Effects 

Certain medications, such as some antibiotics or anticoagulants, can cause changes in nail color, including darkening. It is important to consult your healthcare professional if you notice unexplained changes in color, such as black nails, while taking medications. They can assess whether these changes are medication-related and decide if adjustments are necessary.

Conclusion 

Black nails in adults can have various origins, but most are associated with trauma, fungal infections, subungual hemorrhages, underlying medical conditions, or medication side effects.

Taking preventive measures is crucial for maintaining nail health, including avoiding injuries, maintaining proper hygiene, monitoring color changes, and managing any underlying medical conditions.