1. Do your nails have deep horizontal ridges (Beau’s lines)?

2. Do your nails appear clubbed (curved downward with a swollen fingertip)?

3. Are your nails extremely pale or bluish in color?

4. Do your nails frequently become brittle, weak, or peel excessively without external damage?

5. Do your nails have an unusual spoon shape (concave or sunken in the center)?