Onycholysis: What Nail Pros Should Know About Nail Separation

What Is Onycholysis?

In onycholysis, the nail acts like a lever, slowly pulling away from the nail bed. It can be caused by a wide range of factors, including:

• Physical trauma

• Chemical exposure

• Underlying skin conditions or systemic diseases

• Certain medications

While this condition often resolves on its own, it can take several months—sometimes up to a year for toenails—to fully recover, depending on severity and cause.

Common Symptoms of Onycholysis

Look for these visual and physical cues:

• White or opaque area on the nail where detachment occurs

• Thickened skin under the lifted nail

• Pitting or indentations on the nail surface

• Discoloration, especially if an infection sets in (green for bacterial, white for yeast)

• No initial pain, though discomfort may develop if infection or trauma continues

What Causes Onycholysis?

While multiple causes exist, physical trauma is the most common culprit. Other causes include:

Physical Trauma:

• Overfiling the natural nail

• Vigorous cuticle pushing or cleaning under the nail

• Tapping/typing, especially with long nails

• Wearing tight shoes (common with toenails)

• Blunt force (e.g., slamming a finger in a door)

Chemical and Product Irritants:

• Nail hardeners or adhesives

• Frequent wet work or prolonged water exposure

• Allergic contact dermatitis from nail products

Health-Related Causes:

• Psoriasis or thyroid disease

• Fungal or bacterial infections

• Medications that affect nail growth

Treatment and Recovery

Key Guidelines:

• Avoid trauma to the affected nail(s)

• Keep the area clean and dry

• Trim nails short and avoid manipulating the lifted area

• Do not attempt to remove the detached portion—this should be handled medically

• Refer to a doctor for diagnosis and treatment

If infection is suspected:

• A physician may order lab tests to confirm fungal involvement

• Medications or antifungals may be prescribed

Tips for Nail Technicians

If you see signs of onycholysis on a client:

Do:

• Recommend a physician visit for diagnosis

• Be gentle with the affected nails

• Shorten nail enhancements (without removing them)

• Keep nail beds dry during services

• Adjust services for lifestyle (e.g., suggest shorter nails for frequent typists)

Don’t:

• File aggressively or over-manipulate the nail

• Apply nail polish, remover, or enhancement chemicals on the affected nail

• Attempt to trim or remove the detached nail