Yellow nail syndrome: a review

Area of Science:

• Medical Genetics
• Pulmonology
• Dermatology

Background:

• Yellow nail syndrome (YNS) is a rare disorder typically affecting individuals over 50, though juvenile/familial forms exist.
• Diagnosis relies on a triad of yellow nail discoloration, pulmonary issues (e.g., bronchiectasis), and lymphedema, often with chronic sinusitis.
• The etiology of YNS is unclear, but lymphatic impairment is suspected, and it can be associated with autoimmune diseases, other lymphatic dysfunctions, or cancer (paraneoplastic syndrome).

Purpose of the Study:

• To summarize the key diagnostic features of Yellow Nail Syndrome.
• To outline the current understanding of YNS etiology and associated conditions.
• To review the symptomatic and non-codified management strategies for YNS.

Main Methods:

• Literature review of Yellow Nail Syndrome.
• Analysis of diagnostic criteria and clinical manifestations.
• Compilation of current treatment approaches for nail, pulmonary, and lymphatic symptoms.

Main Results:

• YNS presents with characteristic yellow nails, respiratory problems like chronic cough and bronchiectasis, and lower limb lymphedema.
• Chronic sinusitis is a common comorbidity.
• Management is symptomatic, with potential for spontaneous resolution. Treatments include oral vitamin E, antifungals for nail discoloration, surgical options for pleural effusion, antibiotics for bronchiectasis, and compression therapy for lymphedema.

Conclusions:

• Yellow Nail Syndrome is a rare, complex disorder with significant impact on respiratory and lymphatic systems.
• Current management is focused on symptom relief and lacks a definitive cure.
• Further research into YNS etiology may elucidate underlying mechanisms and improve therapeutic strategies.