Tongue Ties in Infants
In this photo notice that the baby is mouth breathing. Babies are supposed to breath through their noses. Notice the nursing blisters on both upper and lower lips. This is not dry skin, it is a blister from the baby using the lips to hold the breast rather than flanging them outward to suck at the breast.
The frenum is too tight and keeps the upper lip from being able to flange outward. The lip should be able to cover the nostrils without pain or tension.
Tongue ties come in all shapes and sizes. They can be thick or thin. Have only one obvious strand or several strands. They can be both above and below the salivary ducts. And they can attach anywhere from the tip of the tongue all the way back to under the skin at the base.