6. Spoon-Shaped Nails (Koilonychia)
- Nails that curve upward like a spoon may be connected to iron-deficiency anemia.
- If this appears with symptoms like tiredness or weakness, checking iron levels can be helpful.
7. Clubbing (Rounded Fingertips and Curved Nails)
- In this condition, the fingertips enlarge and nails curve downward over time.
- It can sometimes be related to lung or heart disorders.
- Because it develops gradually, people often overlook it—medical assessment is advisable.
8. Horizontal Grooves (Beau’s Lines)
- Deep horizontal ridges may form after severe illness, infection, or physical stress.
- They indicate that nail growth temporarily slowed or stopped.
- Repeated grooves could signal an underlying health concern.
