A tongue-tie (also known as Ankyloglossia) is caused by a short or tight membrane under the tongue (the lingual frenulum).

Where the membrane is attached at, or close to the tongue tip, the tongue tip may look blunt, forked or have a heart shaped appearance. However, where the membrane is attached further back the tongue may look normal.

Research suggests that approximately 1 in 10 babies may be born with some membrane under the tongue. But only about half of those babies display significantly reduced tongue function, making breast or bottle feeding difficult.

These babies are likely to benefit from treatment to release the restriction that the membrane is having on the tongue and enable baby to feed effectively.