My son is 8 months old. His weight is 10 kg. He is on breast milk & recently started semi solid (only fruits).He is an active baby. He is having vertical lines on nails since birth. Is this due to any
vitamin deficiency or any other health issue? His medicines includes vitamin D3, multivitamin & iron drops. Dosage is 0.5 ml daily. Please let me know the reason for vertical lines on nails.