Yellow Nail Syndrome
📖 About
- Yellow Nail Syndrome (YNS) is a rare disorder characterised by the triad of:
- 💅 Yellow, slow-growing nails
- 🫁 Respiratory involvement (bronchiectasis, pleural effusions)
- 🦵 Lymphoedema
- Can be associated with internal malignancies, immunodeficiency syndromes, and rheumatoid arthritis.
🧬 Aetiology
- Thought to arise from lymphatic drainage abnormalities (blockage or structural damage).
- Exact cause is often unknown; may be sporadic or associated with systemic disease.
🩺 Clinical Features
- Nail changes: thickened, yellow, curved nails that stop growing and may detach (onycholysis).
- Respiratory disease:
- Recurrent pleural effusions → dyspnoea, pleuritic pain, abnormal CXR.
- Bronchiectasis → chronic cough, sputum production, recurrent infections.
- Chronic bronchitis and sinusitis also reported.
- Lymphoedema: usually of lower limbs, may be congenital or acquired.
🔍 Investigations
- Blood tests: FBC, U&E, LFT, ESR/CRP to look for systemic disease.
- CXR and CT chest for pleural effusion or bronchiectasis.
- Consider immunological work-up if recurrent infections.
💊 Management
- Nails: topical vitamin E solution; oral antifungals (itraconazole) may improve appearance.
- Pleural effusions: therapeutic aspiration, pleurodesis, or shunt if recurrent.
- Bronchiectasis: chest physiotherapy, mucolytics, antibiotics for exacerbations.
- Lymphoedema: compression garments, physiotherapy, limb care.
- Treat any underlying condition (e.g. malignancy, RA, immune disorder).
📚 References
- Hoque SR et al. Yellow nail syndrome: Not just a cosmetic problem. BMJ Case Reports, 2008.
- DermNet NZ – Yellow Nail Syndrome.
- British Thoracic Society Pleural Disease Guidelines.
🧾 Clinical Case – Yellow Nail Syndrome
A 62-year-old man presents with progressive shortness of breath, recurrent sinus infections, and bilateral leg swelling.
On examination, his nails are yellow, thickened, and slow-growing, with absent cuticles.
Chest CT shows a pleural effusion and bronchiectasis, while Doppler confirms chronic lymphoedema.
Diagnosis: Yellow Nail Syndrome, a rare triad of nail changes, respiratory disease, and lymphoedema.
He was managed with pleural drainage, antibiotics for bronchiectasis, compression stockings, and supportive nail care.
