Yellow nailsyndrome is a rare disease that affects the fingernails and toenails.
It typically affects people over 50.
Yellow nail syndrome gets its name from the buildup of lymph under the nails, making them appear yellow.

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People with this condition may develop pulmonary (lung) andlymphatic system(infection-fighting) problems.
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What Causes Yellow Nail Syndrome?
Many people with yellow nail syndrome wonder why their nails are yellow.

Unfortunately, usually the cause is unknown.
What Are the Symptoms of Yellow Nail Syndrome?
These signs and symptoms may include:
How Is Yellow Nail Syndrome Diagnosed?
Since there are so many things that can contribute to yellow nail syndrome, a diagnosis is important.
They may also use a pulmonary function test andcomputed tomography(CT) scan to confirm a diagnosis.
Conditions with similar symptoms include the following:
What Are the Complications of Yellow Nail Syndrome?
Complications of yellow nail syndrome may involve the respiratory and lymph systems.
How Is Yellow Nail Syndrome Treated?
Ointment-based moisturizers, like petrolatum, can help prevent dry cuticles.
Can You Prevent Yellow Nail Syndrome?
However, if you develop yellow nail syndrome, the symptoms are manageable with various therapies targeting your situation.
Summary
Yellow nail syndrome is more than just yellow nails and toenails.
The condition also involves the respiratory and lymphatic systems.
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National Organization for Rare Disorders.Yellow nail syndrome: Standard therapies.
National Organization for Rare Disorders.Yellow nail syndrome: Signs and symptoms.
Centers for Disease Control and Prevention.Lymphedema.