Fingernail Colour Changes Could Signal Serious Health Conditions
Medical experts are issuing a stark warning about the potential health implications of changes in fingernail colour, urging the public to monitor their nails closely for specific alterations that could indicate underlying diseases.
Why Nail Colour Changes Matter
The American Academy of Dermatology Association has emphasised that while some nail changes are harmless, certain colour variations can serve as crucial warning signs for serious medical conditions. A change in colour, texture, or shape can be harmless, but it can also be a sign of disease, the organisation states on its official website.
Dermatologists recommend that anyone noticing significant changes to their fingernails or toenails should consult a board-certified dermatologist for proper assessment. The connection between nail appearance and internal health is well-established in medical literature, with specific colours corresponding to particular organ systems and potential disorders.
Specific Colour Changes and Their Potential Meanings
White Nails
When nails develop a predominantly white appearance, this could indicate liver disease or diabetes. The AAD notes that this is particularly concerning for individuals with cirrhosis, the most advanced stage of liver disease. While white nails can sometimes develop naturally with ageing, medical evaluation remains advisable to rule out serious underlying causes.
Half Pink, Half White Nails
This distinctive pattern, where the upper portion of the nail appears white while the lower section maintains a normal to reddish-brown colour, can signal kidney disease. The clear demarcation between colours makes this symptom particularly noticeable and warrants medical attention.
Yellow Nails
A yellow tint to the nails may indicate lung disease, with medical experts linking this colour change to potential problems with the circulatory or lymphatic systems. According to the Cleveland Clinic, when these systems malfunction, fluid can accumulate in soft tissues beneath the skin, potentially turning nails yellow. However, yellowing can also result from fungal infections or smoking, making professional diagnosis essential.
Dusky Red Half-Moons and Dark Streaks
The AAD provides particularly concerning information about dark streaks appearing under nails, warning that a new or changing dark streak could be melanoma, the most serious type of skin cancer. The NHS echoes this warning, advising individuals to consult a GP if they notice a dark area under a nail that hasn't resulted from injury.
Additional Colour Indicators
The AAD identifies several other nail colour changes that could signal health issues:
- Blue nails - May indicate insufficient oxygen in the bloodstream
- Pale nails - Could signal anaemia
- Blue half-moons - Might indicate poisoning
Medical professionals stress that while not every nail colour change indicates serious illness, being aware of these potential warning signs enables early detection and intervention for various conditions. Regular self-examination of nails, combined with professional medical advice when changes occur, forms an important part of preventive healthcare.
