Could this be the reason that my child is battling to breastfeed?
One of the main causes is a tongue which occurs in about 10%of new-borns. This is when the under surface of the tongue is adhered to the floor of the mouth just behind the lower gum. I happens more commonly in boys and is gradual one to four depending on severity. This mid-line attachment may be towards the trip of the tongue (anterior tie) or towards the main body of the tongue (posterior tie). This can easily be diagnosed clinically by opening the moth and is obvious when the child gests older and is unable to protrude or lift the tongue.

Tongue-Tie in Babies: