Blue Nails

Blue nails, also known as cyanosis, refers to a condition where the nails, including the toenails, appear bluish in color. It occurs when there is insufficient oxygen in the bloodstream or poor blood circulation to the extremities. Blue nails can be a symptom or sign of an underlying medical condition such as heart or lung diseases, circulatory disorders, or Raynaud’s disease. It is important to consult a healthcare professional for an accurate diagnosis and appropriate treatment if you notice blue nails.