At Kin Body and Sole, patients often book a podiatry and chiropody assessment with concerns about a nail lifting away from the nail bed. This condition (known as onycholysis) is common, but its causes can vary significantly.
Understanding why a nail has lifted is essential to ensuring the correct treatment and preventing further damage.
What Is Onycholysis?
Onycholysis is the separation of the nail plate from the nail bed, usually beginning at the tip and progressing backwards (DermNet, 2020; Hecker, 2026). [guidelinegenius.com], [webmd.com]
It typically presents as:
- A white or opaque area where the nail has lifted
- A clear border between the attached and detached nail
- Possible discolouration (white, yellow)
The condition is often painless, although discomfort can occur depending on the underlying cause (Cleveland Clinic, 2022). [ncbi.nlm.nih.gov]
Why Does Onycholysis Occur?
Onycholysis is not a condition, but a symptom with many possible causes. Identifying the underlying cause is key to effective management.
1. Trauma (Most Common Cause)
Repetitive pressure or injury—such as tight footwear, running, or nail damage—is the most frequent cause, particularly in toenails (Ricardo et al., 2026). [thelancet.com]
2. Fungal Nail Infection
Fungal infections can cause thickening beneath the nail, leading to lifting (Drugs.com, 2025). [aafp.org]
3. Skin Conditions
Conditions such as psoriasis, eczema, or dermatitis can affect the nail bed and lead to separation (Primary Care Dermatology Society, 2023). [gov.uk]
4. Nail Products and Chemical Exposure
Frequent use of gel nails, acrylics, or harsh chemicals can weaken the nail and contribute to lifting (Rieder and Tosti, 2016). [emjreviews.com]
5. Medical Conditions
Less commonly, onycholysis may be linked to systemic conditions such as thyroid disorders or iron deficiency (Drugs.com, 2025). [aafp.org]
6. Moisture and Environment
Prolonged exposure to water or damp environments can soften the nail structure, increasing the risk of separation (DermNet, 2020). [guidelinegenius.com]
Why Accurate Diagnosis Matters
Because onycholysis has multiple causes, it is important not to assume it is fungal.
Research shows that nail changes are frequently misinterpreted, as trauma, psoriasis, and fungal infections can all present similarly (Ankad et al., 2020). [derbyshire…ent.org.uk]
Correct diagnosis allows for:
- Appropriate and targeted treatment
- Avoidance of unnecessary antifungal therapy
- Identification of underlying health issues if present
Can a Lifted Nail Reattach?
Once the nail has separated, it will not reattach to the nail bed. Instead, the damaged area must grow out as a new nail replaces it (Healthline, 2024). [mdpi.com]
In addition, it is important to understand that in some cases, the outcome is influenced by the health of the nail matrix (the area at the base of the nail responsible for nail growth).
When the Nail Matrix Is Damaged
If the nail matrix has been damaged—due to trauma, long-term pressure, inflammation, or infection—the new nail may not grow back normally.
This can result in:
- Ongoing nail lifting (persistent onycholysis)
- Irregular or misshapen nail growth
- Reduced ability of the nail to reattach fully to the nail bed
In these cases, onycholysis may not be completely reversible, even with appropriate treatment. The nail may continue to grow in partially lifted or prone to separation.
Because the nail grows slowly, this can only be assessed over time as the new nail comes through.
How Is Onycholysis Managed?
Treatment focuses on the underlying cause and supporting healthy nail regrowth.
General Management Principles
- Keep nails trimmed and clean
- Avoid trauma (e.g. tight footwear or repetitive pressure)
- Reduce exposure to water and irritants
- Avoid gel or acrylic nails during recovery
Maintaining a dry environment is particularly important, as the gap beneath the nail can allow bacterial or fungal colonisation (Toenail Clinic, 2026). [pmc.ncbi.nlm.nih.gov]
When Treatment Is Needed
- Fungal cause → antifungal therapy
- Inflammatory conditions → dermatological management
- Chemical or trauma-related → removal of the trigger
In some cases, laboratory testing (such as dermatophyte testing) may be recommended to rule out fungal infection.
When Should You Seek Advice?
It is important to seek professional assessment if:
- The nail continues to lift or worsen
- Multiple nails are affected
- There is pain, redness, or discharge
- There is uncertainty about the cause
Early intervention can help prevent infection, nail deformity, and prolonged recovery.
Our Approach at Kin Body and Sole
At Kin Body and Sole, we provide evidence-based, patient-centred care for nail conditions.
Our approach includes:
- Thorough clinical assessment
- Investigation of underlying causes
- Dermatophyte testing where indicated
- Personalised treatment and aftercare advice
Our focus is on treating the cause—
not just the symptom—to achieve the best long-term outcome.
Final Thoughts
Onycholysis is a common condition, but it should never be overlooked. Nail separation is often a sign of underlying trauma, infection, or systemic factors.
In some cases, the nail may fully recover. In others, particularly where the nail matrix has been affected, changes may be long-term.
With accurate diagnosis and the right management, we can support the best possible outcome for your nail health.
References
Ankad, B.S. et al. (2020) Dermoscopy of onycholysis due to psoriasis, onychomycosis and trauma. Indian Dermatology Online Journal.
Cleveland Clinic (2022) Onycholysis. Available at: https://my.clevelandclinic.org [thelancet.com]
DermNet (2020) Onycholysis. Available at: https://dermnetnz.org [assets.pub…ice.gov.uk]
Drugs.com (2025) Onycholysis guide. Available at: https://www.drugs.com [mdpi.com]
Healthline (2024) Onycholysis: causes and treatment. Available at: https://www.healthline.com [ncbi.nlm.nih.gov]
Hecker, M.S. (2026) Onycholysis: Background and causes. Medscape. Available at: https://emedicine.medscape.com [psoriasis.org]
Primary Care Dermatology Society (2023) Nail disorders. Available at: https://www.pcds.org.uk [derbyshire…ent.org.uk]
Ricardo, J.W. et al. (2026) Evaluation and management of mechanical and structural nail disorders. Journal of the American Academy of Dermatology. [gov.uk]
Rieder, E.A. and Tosti, A. (2016) Cosmetically induced disorders of the nail. Journal of Clinical and Aesthetic Dermatology. [footandanklesnh.com]
Toenail Clinic (2026) Onycholysis clinical guide. Available at: https://thetoenailclinicnyc.com [frontiersin.org]