It is recommended to start trimming your baby's nails when they are 2-3 weeks old, as their nails are soft and flexible at this age.

Baby nail clippers are specially designed for trimming infant nails and are less likely to cause injury.

The frequency of nail trimming depends on how quickly your baby's nails grow. Some babies may need their nails trimmed more often than others.

If you accidentally cut your baby's nail too short, you should apply pressure to stop the bleeding, apply a cold compress, and cover the nail with a bandage.

Common nail problems in infants include ingrown nails, onychomycosis (fungal infection of the nail), and paronychia (infection of the nail fold).

To prevent nail problems in infants, you should trim their nails regularly, keep their nails clean and dry, and avoid biting or picking their nails.

The best way to clean your baby's nails is to use a mild soap and water.

If your baby has an ingrown nail, you should see a doctor for treatment.

Treatment for a fungal nail infection in infants may include applying a topical antifungal cream and taking oral antifungal medication.

Treatment for paronychia in infants may include applying a warm compress, applying a topical antibiotic, and taking oral antibiotics.

It is not recommended to use nail polish on infants' nails, as it can be harmful if ingested.

To maintain healthy nails in infants, you should trim their nails regularly, keep their nails clean and dry, and avoid biting or picking their nails.

If you have any concerns about your baby's nails, you should talk to your baby's doctor.

To prevent nail biting in infants, you should trim their nails regularly, keep their nails clean and dry, and apply a bitter-tasting nail polish.

If your baby sucks their thumb or fingers, you should talk to your baby's doctor to discuss the best way to address the issue.