Treacher Collins syndrome:
Treacher Collins is a condition in which the cheek-bones and jawbones are underdeveloped. Children with this condition have very small or partially absent cheek bones and notches in or stretching of the lower eyelids. The ears are frequently abnormal and part of the outer ear is usually absent. Hearing loss is also associated with this syndrome.
For more detailed information, please download our free booklet, A Guide to Understanding Treacher Collins Syndrome.