Colorado Cosmetology Written Practice Exam

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What do blue nails appear as?

  1. They appear blush in color

  2. They have horizontal wavy ridges across the nail

  3. They are characterized by very thin, soft nails

  4. They contain living tissue underneath the free edge

The correct answer is: They appear blush in color

Blue nails can indicate a medical condition known as cyanosis, which is caused by a lack of oxygen in the blood. This can cause blue or purple discoloration in the nails. The other options are incorrect because blush color nails may indicate anemia, not cyanosis. Horizontal wavy ridges across the nail may indicate Beau's lines, a sign of underlying health issues. Very thin, soft nails are common in conditions such as anemia or hypothyroidism. Living tissue underneath the free edge is normal for healthy nails.

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