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Updated: May 12, 2026
02:28
Measuring Psoriasis Severity at Home
Published on: March 1, 2024
Nail psoriasis: a questionnaire-based survey.
K M G Klaassen1, P C M van de Kerkhof, M C Pasch
1Department of Dermatology, Radboud University Nijmegen Medical Centre, Nijmegen, the Netherlands. k.klaassen@derma.umcn.nl
The British Journal of Dermatology
|April 5, 2013
Summary
Nail psoriasis is more common than previously believed, affecting 66% of patients. This condition is linked to more severe psoriasis and often goes untreated, despite systemic therapies showing effectiveness.
Area of Science:
- Dermatology
- Clinical Research
- Epidemiology
Background:
- Psoriasis commonly affects the skin, but nail involvement is a frequent, yet often overlooked, clinical feature.
- The reported prevalence of nail psoriasis varies significantly in existing literature.
Purpose of the Study:
- To determine the prevalence and clinical characteristics of nail psoriasis.
- To understand patient experiences with treatments for nail psoriasis.
Main Methods:
- A questionnaire was distributed to 5400 members of the Dutch Psoriasis Association.
- Patients reported nail manifestations with photographic evidence.
- Nail psoriasis patients were compared to those without nail involvement.
Main Results:
- The prevalence of nail psoriasis was found to be 66.0%.
- Nail pitting was the most common manifestation (65.4%).
- Nail psoriasis correlated with scalp, genital psoriasis, and psoriatic arthritis; only 16.0% received treatment, with systemic therapies noted as effective.
Conclusions:
- Nail psoriasis is more prevalent than previously assumed.
- Nail psoriasis is associated with more widespread and severe psoriasis.
- Effective treatments exist, yet nail psoriasis remains an under-recognized aspect of the disease.
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