When a newborn baby has a tongue tie it can cause a functional problem. Usually, in this age group, the most common concerns are issues with breast or bottle feeding.
For a breast-fed baby, the mother may experience nipple pain or damage or have latching problems. The baby may be inefficient with their feeds, they may tire easily, or they may have slow weight gain.
A bottle-fed baby may take a long time to feed or having difficulty latching to the teat.
Both breast and bottle-fed babies with tongue tie may experience choking or coughing during the feed, some may make a clicking sound.
The tongue itself may be heart-shaped or have a notch in the tip, or the tongue can be square looking. The baby may have difficulty bringing the tongue forward, lifting it up, or moving it side to side.